what thickness should monolithic polycarbonate be for a terrace roof?

Polycarbonate belongs to the category of new building materials. Hard plastic appeared on the market about 20 years ago. High technical characteristics and aesthetically attractive appearance have made the material in demand. Polycarbonate structures look less massive, lighter, due to the light weight of the sheets and the ability to transmit light. Let's consider how to choose polycarbonate for a canopy, which one is best to use from a diverse palette of types of hard plastic, with different technical parameters and colors.

Cellular polycarbonate Source sense-life.com

What should be the thickness of polycarbonate for a canopy - factors influencing the choice of material

When planning to build a polycarbonate canopy, you should understand what thickness of material to use. Your choice will be significantly influenced by the design features of the frame, incl. sheathing frequency; volume of snowfall; wind loads in a particular region, etc. If you combine all these parameters, you can conclude what thickness of polycarbonate is better for a canopy and decide on the method of installing the frame.

How to cut monolithic polycarbonate?

There are several tools for working with the product:

Cutting with a grinder should be done using a metal wheel with No. 125. The main rule is movement without pressure.
With the help of a stationery knife, even novice builders can cut out the necessary parts. The tool is only used for sheets no thicker than 8 mm.
Sometimes the only suitable tool is a jigsaw. It is used to cut monolithic shaped polycarbonate from sheets of any thickness. It is used in the manufacture of garden buildings, for example, with the help of just a jigsaw you can make a greenhouse from monolithic polycarbonate.
Laser cutting has recently appeared among the tools. The advantages are high speed, smooth edges and work with products of any thickness.

Honeycomb panels

In cross section, the cellular polymer looks like triangles, squares or honeycomb rectangles. These are stiffening ribs. This design was invented for a reason: thanks to this configuration, reliability and sound insulation are increased, but the thermal conductivity of the material is reduced.

According to the structure, there are five cellular type panels:

Structures made of cellular polycarbonate differ from analogues in excellent strength and increased sound insulation, although they have poor thermal conductivity.

Such devices can withstand a lot of snow, and when hit by hail or rain, they do not make loud sounds.

Roof design features ↑

Terraces are an extension of the house, and the main requirement for their design will be complete architectural compliance with the style of the building. Taking this into account, there are two types of roofing for covered areas: straight and arched.

In the first version, a veranda with a polycarbonate roof rests on various structures: walls, pillars, columns and others. But the roof itself is made in the form of a conventional rafter system. It is made by laying load-bearing beams with a cross-section of 50×100 mm, and counter-lattens for the installation of panels. At the same time, the distance between the roof elements can be made quite wide, because the material does not have significant weight, and also for normal light transmission.

Arched types of terraces have semicircular and oval shapes. For the manufacture of load-bearing structures, you will need, for example, an aluminum or steel profile, depending on the strength requirements.

If you use the honeycomb type, you can make arches from aluminum elements, but subject to winters with little snow.

More durable steel structures are used when a polycarbonate roof is needed for a terrace in areas with snowy winters, while monolithic panels are best suited as a roofing material.

Also, do not forget that the canopy over the polycarbonate terrace must have a slope of at least 5 degrees, and preferably 8.

When assembling the roof, regardless of its design and material, fastenings are provided with self-tapping screws intended for this purpose.

Monolithic sheets

The production of cast products is represented by a wide range of modifications. Here are the top ten most common:

When planning what thickness of polycarbonate to choose for a canopy, it is important to know more about monolithic panels. The latter are flat or profiled - more durable and valuable. The base surface of corrugated polycarbonates significantly reduces the thermal expansion of the material and makes the product attractive.

Any type of monolithic panels is presented in one size in length - 3050 mm, in width - 2050 mm, but their thickness can vary from 2-6 mm. According to the customer’s wishes, any thickness of polycarbonate for the visor can be made, but not more than 12 mm.

As mentioned above, the cross-sectional size of polycarbonate for a canopy is influenced by the climatic conditions of the region, but the choice of geometric dimensions of the material, sheathing and supporting structure as a whole is a function of the structure.

Legal registration

Naturally, in the private sector you will not have any special problems arranging a terrace, because you have every right to build whatever your heart desires on the roof of your house. But with a public roof in an apartment building, everything will not be so simple.

First, you will have to negotiate with your neighbors and obtain appropriate permission from the company servicing your home. It will take a lot of time, but don't worry - the roof terrace will not go out of style in the coming decades.

The roof terrace can be a real entertainment and relaxation spot, especially on summer evenings. There is one condition - everything will be durable and made of the best materials. Therefore, before you start work, make sure you know what the terrace should look like and why you are creating it, so that it is truly safe.

Polycarbonate thickness and canopy types

When determining what thickness of polycarbonate is best to use for a canopy, it is worth recalling what is called a canopy. This is not an insulated coating that protects residents from precipitation: snow, rain, hail and, in some cases, from direct rays of the sun. Installation of such a device is carried out on supports with one or more walls around the perimeter. Often home craftsmen provide a canopy for the roof, which is placed over terraces, balconies or entrance doors, and the roof itself is fixed to the wall of the house.

Such structures, having monolithic or cellular type coatings, are in demand in parking lots, for storing building materials, firewood and for other economic purposes. Installing polycarbonate canopies is beneficial due to the light weight of the material, low price and other significant parameters.

Polycarbonate can be called an exclusive roofing material that can bend, so canopies from it can be built of any shape, according to the imagination of the master. Here, no standards are acceptable, and in the course of research, hipped, curved, single- and gable roofs for sheds are “born.” The radius panel simply bends and is not assembled from pieces.

What is better monolithic polycarbonate or plexiglass?

To determine which of these materials to use, it is necessary to understand the goals and scale of the future construction. The products differ from each other in the following respects:

Plexiglas is 200 times less durable than sheet monolithic polycarbonate.
In order to give the plexiglass the required radius of inclination or bending, it must be heated to high temperatures. The flexibility of polycarbonate makes it possible to bend the product without deformation or breakage.
Plexiglas does not turn yellow from exposure to ultraviolet radiation. Polycarbonate requires special treatment, otherwise its surface becomes spoiled in appearance.
Monoliths weigh three times less than plexiglass.
The light transmission of plexiglass reaches 98%. For polycarbonate this figure is 83%.
Monolithic polycarbonate can withstand run-up from -50 to +120°C. Plexiglas is suitable in the range from -40 to +80C.
When ignited, organic glass ignites easily and burns for a long time. Monolithic polycarbonate cannot be set on fire; it has high fire safety criteria.
Polishing plexiglass is an easy process that gives a pleasant appearance. Polycarbonate is difficult to polish and differs in appearance.
The price of plexiglass is lower than monolithic polycarbonate, due to a number of advantages of the latter.

Materials have different areas of application. Plexiglas is used in the manufacture of signs and advertising awnings, swimming pool windows, contact lenses and aircraft glass - for these products, light transmittance and scratch resistance are important criteria. Because of this, it is difficult to say that monolithic polycarbonate is superior in quality.

How to arrange a load-bearing frame

When assembling all kinds of hanging structures, priority is given to the supporting frame, which is made of wood or metal. Undoubtedly, a wooden profile will be cheaper for the customer than a metal one, and will look more attractive. But metal ones can be deformed, and as a result you can get rounded roofs for a canopy. That's why home craftsmen often wonder: monolithic panels or cellular polycarbonate for a canopy - which one to take?

To support the roof, use:

Then a lathing made of wood or metal is placed on various supports. According to engineers, in the process of arranging a load-bearing frame, the category of supports does not play any role.

Where is monolithic polycarbonate used?

The product is very popular in the industrial sector. There are no industries that do not use this monolithic polymer:

Construction – for urban facilities, shopping centers and office buildings.
In the transport industry - for road signs, billboards, stopping points, and so on.
In agriculture - in the production of greenhouses and greenhouses. Monolithic polycarbonate is used for canopy over plant and livestock complexes.
In sports, polycarbonate is used to make protective helmets and sides on hockey fields.
In the food industry, the product is common in the production of storage containers.
In medicine, these are vessels and containers for medicines, dentures, artificial joints and much more.
Electronics uses monolithic polycarbonate for the manufacture of computer monitors and mobile phone screens.
In the chemical industry, polycarbonate is used to transport and store hazardous liquids.

Assembling a carport frame: example

After you decide what thickness of polycarbonate is needed for the canopy, you need to start making the sheathing. It is quite possible to obtain a bent metal profile using a pipe bending machine and using a welding machine. But not every home craftsman has such tools. It is much cheaper and faster to prepare a wooden sheathing from timber - there will certainly be no problems with carpentry tools!

Then you should calculate the number of risers according to the area of the canopy. In this case, you need to make sure that there are no spans over 3 m, because the beams can bend under the weight of the snow. If you are making a canopy from polycarbonate, then you can use 100x100 mm timber as supports, then use a profile with the same cross-section to make the strapping (100x50 mm lumber is allowed).

To make the lathing, use a board with the same size of 100×50 mm - this is the most optimal option. If such material is not available, you can use other values - 70×40 mm, 70×30 mm. The width of the building is of great importance when choosing the size of lumber. Since the length of the parking area is no more than 2.5 m, you can use the smallest section of the board.

Wood sheathing under polycarbonate is placed on a pitched roof on top of the beams, i.e., taking into account the slope, the mating will be carried out only along the edges of the board or beam. How to connect them? Let's say right away - it's not easy.

You can use two options:

The last method is the simplest, and the design with corners will be more rigid and stable.

The pitch of the sheathing for an overall polymer roof should not exceed 50-60 cm, and with frequent fastenings the pressure on the polycarbonate decreases. The size of the roof overhang depends on the wishes of the customer, but keeping in mind the loads of wind and snow, it is better not to increase it more than 40 cm. The thickness of polycarbonate for an canopy was discussed above.

Relation of monolithic polycarbonate to temperature

The resistance indicators of polymer panels to climatic conditions are determined by the relevant Russian and international standards. Monolithic polycarbonate has significant frost resistance; it can be used for the manufacture of external structures.

The latter can be used at temperatures up to – 50 °C, provided there are no mechanical loads; at – 40 °C, this material can even withstand impact impacts.

The heat resistance of most brands of polycarbonates is up to + 120 °C; in some samples this figure reaches +150 °C. Like all materials, when heated, the polymer increases in size; the coefficient of thermal linear expansion is determined using a special technique. For monolithic polycarbonate, its value is 6.5 × 10-5 m/°C, which allows it to be used for the manufacture of especially critical external structures. They work successfully in conditions with significant temperature changes.

How to choose polycarbonate for a canopy: which one is better for a terrace or veranda

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Glass that doesn't break

Visually indistinguishable from ordinary glass, monolithic polycarbonate is several times lighter and has unique resistance to impact loads. According to this indicator, it is 250 times higher than silicate glass and 10 times higher than plexiglass. This quality makes it an indispensable material for the manufacture of translucent structures used in public places. Vandals have virtually no chance of destroying this material with bricks or rebar.

In terms of light transmittance, it is not inferior to glass. 90% of the sun's rays pass through it unhindered. The only serious enemy of polycarbonate is ultraviolet radiation, under the influence of which it loses its transparency. This disadvantage is eliminated by special additives that stabilize the optical properties of the material. They are added to the polymer mass during manufacturing or sprayed onto its surface.

In terms of fire resistance, transparent monolithic polycarbonate belongs to the group of highly flammable materials. When exposed to an open flame, it does not ignite, but only melts and hardens as the temperature drops. An important plus is the low toxicity of the gases released by it during thermal exposure.

The weight of this material is 2 times less than silicate glass. Therefore, installation of structures made from it is simpler and cheaper.

The range of heat resistance of monolithic polycarbonate is very wide. It does not lose strength at forty-degree frost and when heated to +120C. Therefore, pavilions, arches and other translucent structures made of this material can be erected in the Far North and in the hot desert.

In terms of chemical resistance, polycarbonate is superior to other optical polymers. Only gaseous ammonia, as well as aqueous and alcoholic solutions of alkalis (at temperatures above +60C) can harm it.

Polycarbonate retains heat better than silicate glass. Its average heat transfer coefficient is 4.92 W/m2 (for glass 5.7 W/m2). This fact makes the material a cost-effective alternative to traditional glazing.

In terms of soundproofing properties, it (26-34 dB) is similar to ordinary glass (28-34 dB).

Ease of machining, scratch resistance and ease of installation have made this material popular among professionals and home craftsmen who build pavilions, gazebos, awnings and canopies.

Dome canopy for a mini-pool made of polycarbonate sheets

An important operational advantage is the safety of polycarbonate. When destroyed, it cracks without forming sharp fragments.

The average service life of this material is 20-25 years.

High strength is successfully combined with flexibility. This allows you to give the skin a beautiful curved shape without using heat.

Canopy made of monolithic polycarbonate - beautiful and practical

In addition to materials with a smooth surface, we recommend paying attention to textured polycarbonate. Today it is widely used in lamps, office partitions, for fencing areas, as well as in the development of original interior installations.

Textured polycarbonate is a durable and aesthetic light-diffusing material

Corrugated polycarbonate is a beautiful and durable fence design solution

Profiling processing, introduced into the production technology, made it possible to reduce the thickness of the sheet without loss of rigidity and strength.

Profiled monolithic polycarbonate in canopies, gazebos and greenhouses is optimally combined with metal, wood and plastic. It gives structures elegance and lightness, reliably protecting them from rain, sun and snow.

Sheet material on a wooden frame

Open canopy made of profiled polycarbonate on a plastic profile

Polyester carbon plastic is easily painted in bulk and retains its color range for many years.

Types of polycarbonate

There are monolithic and cellular polycarbonate, differing in the structure of the sheet. Monolithic - a solid mass, reminiscent of glass. Cellular - with hollow cells, between several layers of plastic.

Polycarbonate belongs to the category of thermoplastics. They are made from granules using special equipment using the extrusion method. To do this, the granules are heated to the melting temperature, then a sheet is formed. The plastic hardens quickly, literally in seconds. Immediately after molding, a protective layer is applied to protect the material from exposure to ultraviolet radiation. Polycarbonate quickly deteriorates and becomes brittle under the influence of UV. The presence of a protective layer of 50-80 microns prevents this process and extends service life.

Depending on the raw materials and production conditions, plastic with different technical characteristics is obtained.

Monolithic polycarbonate

This type of polycarbonate is sometimes called "impact glass". A high degree of light transmission is combined with strength, but is almost 200 times superior to glass in terms of the latter indicator. They produce sheets with thicknesses from 1.5 mm to 15 mm. There are smooth cast, monolithic polycarbonate and with stiffeners, corrugated. It is stronger than a simple monolithic one, bends easier, and can withstand significant loads. Can be rolled up for easy transportation. In appearance it resembles a profiled sheet.

Smooth sheets are bent to the minimum permissible degree of cold bending, depending on the thickness. Complex shapes that exceed the bending radius are produced by thermal molding.

The main advantages of monolithic polycarbonate:

Standard size of cast polycarbonate sheet: 2050 x 3050 mm; 1220 x 2440 mm; 2050 x 6100 mm.

Flaws:

Ultraviolet protection is provided by applying a special film and adding stabilizers to the plastic mass.

Depending on the color of the material, light transmission changes. Transparent plastic has up to 90%, bronze – up to 50%.

Which polycarbonate is best for a cast polycarbonate canopy. First of all, it depends on the size of the structure. From 2 to 4 mm are used for small canopies and bent structures. From 6 mm to 8 mm for fairly large structures with requirements for wind, snow, and mechanical loads. Cast polycarbonate 10 - 12 mm is used under conditions of extreme loads.

Cast polycarbonate is:

The question of polycarbonate for a canopy, which one to choose, is also based on the degree of light transmission. Transparent molded plastic is used when maximum light penetration is needed. For example, in greenhouses, when polycarbonate replaces double-glazed windows. Translucent canopies create a shadow effect. The color is chosen individually, depending on the design solution and the purpose of the structure. Blue and turquoise sheets are suitable for covering a pool. The range of yellow and brown is used for carports. Opaque polycarbonate (25%) is used for structures where minimal light penetration is required.

Which polycarbonate to choose for a terrace roof, you need to decide not only on the thickness of the sheet, but also on the ability of the polycarbonate to transmit light. If the terrace faces south, it is advisable to use translucent polycarbonate to shade the area. On the north side, opposite, it is transparent.

Cellular polycarbonate

What thickness of polycarbonate is better to use for a canopy, cast or honeycomb. You can choose any type, the main thing is that its technical characteristics correspond to the calculated loads. Cellular plastic has advantages; it is cheaper and lighter in weight than monolithic plastic.

Inside the cellular polycarbonate, between layers of plastic, there are stiffening ribs of various shapes. Depending on the thickness of the sheet, the configuration of the ribs, and the number of layers, the technical characteristics of the material change, namely: thermal conductivity, noise insulation, strength.

Main types of cellular polycarbonate:

The higher the thickness, the greater the strength, the less windage, impact resistance, and heat capacity. But at the same time, the coefficient of light transmission and the minimum permissible degree of bending decreases.

The question arises, what thickness of monolithic polycarbonate is best to use for a canopy. It is necessary to find the optimal ratio of strength and light transmission, depending on the design loads. Small canopies over the porch, entrance, with a significant bending radius are made of cellular polycarbonate 4; 5; 6 mm (2 or 3 layers). For carports and terraces of a sufficiently large area, cellular polycarbonate 6 is used; 8; 10 mm.

Please note, when answering the question, which polycarbonate is better for a veranda, you need to take into account that molded plastic is stronger and transmits light better.

What color of polycarbonate is better to choose for a canopy? Does coloring affect the ability of polycarbonate to transmit light? Dark colors diffuse light. It is not recommended to use the crane and orange spectrum for canopies in sunny areas. Polycarbonate quickly warms up, the air heats up, and it becomes hot. In a swimming pool covered with blue honeycomb plastic, the water will take on a sea-green hue.

Advantages of cellular polycarbonate:

The disadvantages are the same as those of cast polycarbonate, but the cost is lower.

How to replace polycarbonate for a canopy, what alternative options are offered on the construction market. Canopies are made from roofing materials. For example, from bitumen coatings on a continuous sheathing, it is good to bend. They use profiled sheets, but they get very hot and have poor sound insulation. All roofing materials do not transmit light. In terms of strength and degree of bending, cellular polycarbonate is not inferior to roofing coverings; the canopy and terrace are better lit in the daytime.

Field of application of polycarbonate

After its appearance on the construction market, polycarbonate became popular. But under the influence of UV rays it became brittle and quickly collapsed. Therefore, the wave of interest in the material has subsided somewhat. Only when new types with a protective coating appeared and a stabilizer against ultraviolet exposure began to be added, the material again became in demand.

Scope of use:

Another advantage of polycarbonate is the ease and speed of installation. The components, profiles, and fasteners greatly simplify the work.

How to arrange a roof terrace?

It is best to decide what and how the roof terrace will be used for at the design stage. Some people need a quiet place to relax, unwind and unwind, while others want to hang out with family and friends. Some people like to work outdoors (working on a computer, doing crafts, etc.). There are also those who plan to create a real garden there, where plants will grow not only in pots, but also directly in the ground on the roof. In each of these cases, you will have to approach the implementation steps differently.

Roof terraces can be fully or partially enclosed, or completely open. Some have one, two or even three walls. There are terraces located on one level, but there can also be several levels. When creating and arranging your terrace, it is good to take into account the general style of the house, as well as from which room the terrace is accessed, the direction it faces, the distance from the neighbors’ house and the street.

Terrace accessibility

For a home roof terrace to create a functional and attractive space, it needs to be easily accessible.

It is best when the terrace is connected to the interior of the house through a wide balcony door located in the living room or hall. A wide exit will spatially connect the interior of the house with the terrace, thereby increasing the area of neighboring rooms and creating additional home space in the open air.

This solution is especially worth considering when there is an exceptionally beautiful view outside the window. In this case, the terrace may be a more attractive place than the garden, from which the view will not be as spectacular as the view from above.

Roof terrace design options

There are many ways to create a terrace. It can contain grass, flowers, shrubs and even trees. Various decorations, sculptures, mini-ponds, fountains, curtains and screens are presented here. It is worth thinking in advance about functional and atmospheric lighting and appropriate furniture. It all depends on our imagination, expectations, needs and wallet.

However, don't overcrowd this space unnecessarily. A cluttered terrace will not become a place to relax, and its excessive load can jeopardize the ceiling on which it is located.

When creating a roof terrace, especially a version with a lot of vegetation, you should know that we will have to regularly take care of maintaining it in the best condition. For this reason, it is important to choose the right plants. Unless we have a lot of experience in growing them, we should not choose those that require special care. There are many plants that are easy to care for and extremely decorative. Also check whether the species will survive the conditions prevailing on the terrace (sunlight, drafts, humidity, temperature, etc.).

Benefits of a roof terrace

Arranging a roof for household needs actually has only advantages.

You get additional space, which is mainly intended for relaxation and entertainment.
A roof terrace means it doesn't get as hot as a traditional one and doesn't lose valuable heat radiating inside in the winter.
Even a small amount of vegetation on the terrace improves the microclimate and aesthetics of the house.
Who among us, especially those who live in big cities, where to relax among the greenery you need to go to the park or leave, does not even dream of a piece of our own garden or its substitute. Such roof terraces perfectly fulfill these desires and needs.
A terrace, especially in a city apartment or apartment, significantly increases its value and appeal.

With such strong benefits, the number of roof terraces will continue to increase in both old and new buildings.

Disadvantages of Creating a Roof Terrace

To take full advantage of all the benefits of such a terrace, you must also be aware of its disadvantages.

High repair costs. This is roughly the same regardless of the roof geometry chosen, but with rising prices for reinforcing steel, the scale tips slightly towards pitched roofs. The flat roof on which the terrace will be built must be made on a concrete slab, which must withstand heavy snow loads. Otherwise, in winter you would have to run around the terrace with a shovel every few days! Unfortunately, such a slab contains a lot of reinforcement, and this can significantly affect prices.
A flat roof, especially with a terrace, requires some maintenance. Simple - from time to time it needs to be cleared of maliciously blown leaves from nearby trees. If the trees are large, maintenance activities will be quite intensive. Especially in the fall... Minus for the terrace. However, if there are no tall deciduous trees near the house, you can ignore this drawback and enjoy the terrace even in the fall.

The pleasure of having and using a roof terrace is obvious. You don't have to go to the park to sit outside in the greenery. This is a truly tempting solution, especially for city dwellers.

Components, installation features

Before deciding what thickness of polycarbonate to choose for the canopy, you need to make a project and calculate the materials based on it. It is better to use the services of professional builders. You can use online calculators for these purposes.

Any structure consists of a supporting structure and a polycarbonate coating.

The supporting structure includes supports and a frame for attaching polycarbonate. Made from metal, aluminum profiles, wooden beams. Regulated by regulatory construction acts and SNiP rules (2-523-81 for steel structures; 3.04.03-85 – corrosion protection).

The main components are made of polycarbonate and aluminum profiles.

Details for installing polycarbonate:

Polycarbonate expands as a result of temperature fluctuations. Due to the high coefficient of thermal expansion, a gap of 3-3.5 mm is made between the sheets of material. The hole for the fastening is drilled a few millimeters larger.

The standard length of cellular plastic sheets is 6 and 12 m, width 2.1 m. Profiles are produced in accordance with the size of polycarbonate - 6 m.

Types of profiles:

Locks are installed along the edges of the sheets to prevent the sheet from slipping. If the supporting structure is made of metal, it is not recommended to lay polycarbonate sheets directly on the metal. Self-adhesive seals made of rubber and insulating materials with high heat resistance are attached to the sheathing. The seal serves as an additional shock absorber, reducing the noise effect under wind loads and at the moment of friction of materials.

Thermal washer consists of several elements: washers, self-tapping screws, silicone gaskets, plugs. This design tightly attaches the foxes. The gasket covers the hole in the material to prevent moisture from getting in. Serves as a shock absorber against possible pushing through of the material at the fastening points. First, a hole is made in the sheets a few mm larger than the diameter of the screw, then a thermal washer is screwed in perpendicular to the surface of the sheet.

Polycarbonate for the roof of the terrace, what the minimum thickness should be, the choice of profile depends on the individual design features. The connecting strips are universal, for different material thicknesses. The split profile is produced for several sizes of sheets of different thicknesses. The minimum thickness of polycarbonate for a medium-sized terrace is at least 6 mm; a more reliable option, 8 mm material, is used.

The main thing that needs to be taken into account when installing canopies is that the sheets are laid so that the honeycombs are located along the longitudinal supports of the frame, and not across.

Which polycarbonate is better for a canopy, monolithic or cellular, depends on the design features, personal preferences, and material capabilities. The profiles and fastening system are universal, suitable for different types of materials.

A roof terrace is the best way to expand your space

A roof terrace is, first of all, an architectural solution, and secondly, a fashionable mini-garden, even in a metropolis. If your apartment is on the top floor, then the terrace will become for you both a garden, a place for a romantic dinner, and an observation deck. It all depends on your desire and capabilities.

If you also want to have such a wonderful additional area, then you need to know what it is and what conditions must be observed when placing it.

A terrace in a house is unusual, beautiful and unusual. The very origin of the terrace comes from a ledge on the slope; later this meaning also began to denote artificial platforms. For human convenience, the site is almost always covered with a canopy, under the protection of which you can enter the house. The terrace can continue the porch of a country house or balcony.

Terraces that are installed above any room require a special approach. In order to have the terrace or garden of your dreams on the roof, you need to think and do a few important things that will allow you to adapt this space. Therefore, when planning to create a terrace on the roof of a house or garage, you should first prepare well.

Selection of quality material

How to choose polycarbonate for a canopy, what you need to pay attention to.

The sheet is covered on both sides with self-adhesive film. The back side, which is attached to the frame, is transparent. On the outside - colored, with the company logo, markings, indicating the thickness of the protective layer. Before installation, only the bottom transparent film is removed. With an indentation of 10 cm around the perimeter of the sheet, wrap the film with the logo. This is necessary so that it does not interfere with installation work. It is finally removed after installing all the sheets. This sequence eliminates the possibility of confusion between sides with and without UV protection.

Types of application of a UV protective layer:

The second important point is the density of the material. According to existing standards, for a certain type of polycarbonate, its thickness corresponds to the weight of the sheet. Sometimes, manufacturers of low-quality plastic ignore these recommendations in order to reduce costs. The layers and stiffening ribs of the honeycomb are made thinner. When squeezed with your fingers, the honeycombs collapse. When a piece of material is bent, a characteristic crack is heard, and microcracks may appear. High-quality polycarbonate is difficult to press with your fingers; it bends quite hard. When installed on an arched structure, it acquires additional strength due to the internal pressure of the sheet.

Standard sizes and approximate prices per sheet

Two standard sizes of polycarbonate sheets are available: 1.25 x 2.05 m and 3.05 x 2.05 m. The thickness of the material varies from 0.6 to 16 mm.

The average price for a sheet (1.25x2.05 m) of the thinnest material with a thickness of 0.6 mm is 800 rubles (1m2 - 312 rubles)

As thickness and size increase, so does the price. For polycarbonate measuring 3.05 x 2.05 m and 2 mm thick, sellers ask from 4,000 rubles per sheet. 3 mm material of this size can be purchased from 6,000 rubles.

For a sheet of material 4 mm thick you will have to pay at least 8,000 rubles (1 m2 - from 1,300 rubles). Colored material is more expensive than transparent material by an average of 5-7%.

It is worth noting that the indicated prices are relevant for 2016 in central Russia; in the regions the price may be higher by up to 50%.

Profiled polycarbonate is available in four sizes:

1050x2000 mm;
1260×2000 mm;
1260×2500 mm;
1260×6000 mm.

To order, the manufacturer can produce sheets up to 13.5 meters long.

Standard material thickness:

0.8 mm
1.0 mm;
1.2 mm;
1.5 mm;
1.8 mm.

The sheet profile shape is presented in two versions:

Wavy (wave height 18 and 34 mm with a width of 76 and 94 mm).
Trapezoidal (profile height 18 mm, width 25 mm).

The approximate price for 1 m2 of the most popular profiled transparent polycarbonate with a thickness of 0.8 mm is 600 rubles. Colored material is 5% more expensive. The average price for 1 square meter of profiled sheet with a thickness of 1.8 mm is 1000 rubles.

Video description

Tips for choosing polycarbonate in this video:

The problem with choosing quality material is that it is not always possible to check all the parameters by inspection. For example, how to determine the degree of UV protection. This can only be done in laboratory conditions. Therefore, preference should be given to polycarbonate from well-known, time-tested brands. A low price may be a signal of a low-quality product. It is better to choose the “golden mean”.

Pay attention to the service life guaranteed by the manufacturer. The larger it is, the more trustworthy the material is. Monolithic polycarbonate lasts longer than a hundredth, about twice as long.

Lifetime

Monolithic polycarbonate panels are made from granules using extrusion or injection molding.

The service life of this material is determined by the following factors:

quality of raw materials and compliance with technical manufacturing conditions;
correct installation;
climatic conditions and exposure to adverse environmental factors.

Different manufacturers declare their terms of use of the material, with the minimum indicator exceeding 10 years. Studies carried out in a specialized laboratory have shown long-term irradiation (more than 2000 hours) causes a decrease in the permeability of the panel by less than 10%. This corresponds to approximately 20 years of polycarbonate use in desert areas of Arizona or Israel.

How to care for polycarbonate structures

Pre-purchased sheets of plastic are stored in an even stack, preferably in a shaded place. It is recommended to cover them with fabric material. Make sure that the edges do not hang down or bend.

Installation rules must be followed. Resistance to loads, snow, wind, and mechanical depends on how securely the structure is installed and secured. The joints and the end of the cellular polycarbonate are especially carefully sealed to avoid the accumulation of moisture, dust, and small debris inside the sheet.

The recommended slope angle of the canopy is at least 6%. The end profile is attached with a gap, holes are made in it to collect and remove water.

Holes for attaching sheets to the frame according to the drawing markings can be pre-made on the ground. The installation process will be accelerated and the traumatic load on polycarbonate during installation work will be reduced.

Even with the correct calculation of loads, it is better to clear the structure of snow and debris falling from trees during operation.

Wash the sheets with non-aggressive detergents, using a soft cloth or sponge. The use of abrasives, hard brushes, and metal brushes is excluded. Scratches may remain on the sheets and they become cloudy.

How to choose polycarbonate for a canopy and which type is best to use is decided based on the features and stylistic features of the structure using this material. The design should fit organically into the overall conceptual design solution. Traditionally, plastic is chosen that intertwines with the textures of the main roofing materials. For example, if the roof is made of corrugated sheets, then it is logical to use profiled injection molded polycarbonate. The color is chosen to match the tone of the main roof. The second decisive factor is area, design features, technical calculations of loads. They are the ones who determine the thickness of the sheets.

Chemical resistance of the material

Monolithic polycarbonate is a polymer that can effectively withstand destructive environmental factors. The material is inert to many aggressive environments, and this ability depends on temperature and concentration of substances.

The panels are characterized by high chemical resistance to the following compounds:

Organic and inorganic acids and solutions of their salts.
Various types of reducing agents and oxidizing agents.
Alcohols and synthetic detergents.
Organic fats and fuels and lubricants.

At the same time, some chemical compounds are capable of reacting with the polymer, which leads to the gradual destruction of the panels.

For the convenience of the reader, information about the resistance of polycarbonate to certain liquids is presented in the form of a table:

Acetic acid	+	Hexane	+
Salt	+	Hydrogen peroxide, concentration up to 30%	+
Butyl alcohol	+	Gasoline, diesel fuel and mineral oils	+
Ethanol	+	Ammonia	–
Hydrochloric acid, up to 20%	+	Butyl acetate	–
Propane	+	Diethyl alcohol	–
Boric acid	+	Methyl alcohol	–
Potassium permanganate, max. conc. 10%	+	Alkaline solutions	–
The “+” sign in the table means the resistance of the material to long-term exposure to the specified substance.

Briefly about the main thing

You can build and assemble a canopy or terrace in just a few days, thanks to quick installation. Does not require labor-intensive care.

Plastic is selected based on the structural features of the canopy and technical load. Depending on the color of the polycarbonate, light transmission changes, which must also be taken into account.

Polycarbonate is a beautiful, lightweight, light-transmitting material. The variety of types and technical characteristics make it possible to select it for different types of structures.

Source

Arrangement rules

The creation and construction of a roof has a number of nuances and features, including:

The roofing material of the veranda must be exactly the same as for the roof, so that a single building is created in a simple style.
The roof of the veranda should ideally be pitched, so it will serve as a continuation of the roof of the house and will not allow snow masses to accumulate on its surface.
In order for the wooden roof frame to last for a long time, be fireproof and resistant to fungus, it is treated with special impregnations that protect wood species.
For the safety of household members, the slope is positioned in such a way that snow masses from it do not fall on the side of the entrance to the building. During the winter period with heavy precipitation, there is a risk of spontaneous snow falling; if the roof is positioned incorrectly, then household members may suffer or be injured.
The distance between the rafters, the quality and density of the sheathing depend on what roofing material is chosen. The main conditions put forward for the roof are reliability, functionality and complete insulation.
It is necessary to carefully lay a layer of waterproofing, since this building must be reliable and well protected from moisture and leaks.

Style directions

A correctly chosen design of the structure will allow it to fit best into the overall architectural composition of the estate. Modern materials make it possible to build different types of canopies in different styles, for example, in high-tech or rustic style.

In addition to conventional materials, straw and clay products can be used in the design. Grapevines, climbing plants, and bushes are used to decorate structures. Deciduous or coniferous trees and ornamental shrubs planted along the perimeter of the gazebo will help create a cozy look.

Carving, forging, and decorative grilles are used to decorate the frame and roof. Their choice will provide an opportunity to decorate the structure, visually make it lighter and more openwork, while clearly defining its boundaries.

The presence of curtains will make the gazebo comfortable and cozy. For these purposes, patterned fabric with water-repellent properties, tulle or a multi-colored awning are ideal. Additional elements make the design organic, connecting the structure itself with the surrounding natural landscape. For these purposes, LED lighting, decorative lamps and lanterns, and flower beds are used.

Specific examples of the use of polycarbonate sheets

As additional thermal insulation

It also happens that, due to long-term use or an initial mistake by the builders, the walls of a brick country house begin to let in heat and the thermal insulation is damaged. This can cause particular discomfort to people who choose to live permanently on a private property.

As a way out, you can finish the interior walls with sheets of cellular polycarbonate, tightly mounted on the brickwork. This solution will not only help eliminate “cold corridors” and get rid of drafts, but will also perform an aesthetic function, especially if the wall had no interior decoration before. By the way, LED lighting can be placed behind the sheets, mounted together with motion sensors or controllers with pulse-width modulation, which gives almost unlimited possibilities for creating additional illumination in housing.

It must be remembered that the polycarbonate sheet itself is mounted with small gaps. This allows you to avoid the accumulation of condensation behind the finish, which is especially important if the house is made of wood.

As with other materials, thermal insulation can be done partially, for example, on the wall that is most exposed to wind. Then the gap between the polycarbonate and the wall should be minimal.

Also inside the house, instead of ordinary partitions, you can install polycarbonate frame walls. This adds a feeling of additional illumination, and with lighting, you can achieve the effect of expanding the space. Glazing of verandas and loggias using cast polycarbonate is also quite relevant.

Polycarbonate sheets in the shower room

A shower room is an integral part of any home equipped for long-term living or seasonal gardening work. Its importance is on par with the organization of the bathroom, especially in a suburban area. Because it is obvious that after a long day of work you need to wash off the dirt, and you won’t be able to wash yourself properly using buckets and basins.

With the help of polycarbonate, it becomes possible to build a bright and warm shower cabin, in a short time and without the use of any specialized tools. The instructions for making the booth are as follows:

The basis. If the structure is not being created inside the house, then it is advisable to build a foundation; a simple shallow (maximum 30 cm) strip of concrete will be sufficient. To do this, dig a trench of the required size, lay out the formwork, install the sheathing and fill it with cement mortar mixed with medium-sized crushed stone, after removing the studs for attaching the supports. It should be remembered that the sewer pipe for draining water into the foundation is also installed in advance.
Lathing. The base for fastening polycarbonate sheets can be constructed from any material; the most affordable is wood frame technology. In this case, the power supports are made of two boards connected into a T-profile or H-profile, connected to each other by braces and other truss elements. It is best to make the ceilings reinforced, since the water tank is most often located on the roof.
Shower stall walls. The frame for a shower cabin is best assembled from an aluminum profile, and the doors can be made either sliding or hinged. There is also the possibility of improvisation for making a bowl for a shower stall; you can use either a ready-made one made of plastic or a homemade one made from concrete mortar. The polycarbonate sheet is attached to the frame using a bolted connection with a low tightening torque so that the material does not crack; the end connections are treated with sealant and covered with a decorative plastic cover. By the way, you can make not just a transparent booth, but also in different colors, but it is worth remembering that polycarbonate still has a high degree of transparency, so walls made of it in such structures should be covered with a matte translucent film.

You should not throw away polycarbonate scraps; it will be useful in organizing shelves in the same shower room or other rooms of a country house.

The use of polycarbonate walls in urban life

It also happens that several people live or work in the same area. If this is a living space, then you can divide the room into separate zones using polycarbonate partitions. To do this, you need to build a frame from a translucent profile, as is done for drywall, and attach sheet material to it. This solution allows you to maintain a sense of space and does not greatly reduce the level of illumination.

If you need to separate the work area, you can use polycarbonate screens, which can easily be assembled into partitions of any configuration, turning an ordinary room into a full-fledged office space with personal space for each employee. Thin polycarbonate is also suitable here, which is cheaper, but will perform its functionality.

Varieties

Sheds are usually located in high-traffic areas. You can place them above the stairs or steps, adapt them to grapes, or take them out into the backyard.

The uses of such structures are varied. They are used above a parking lot, to cover play areas, a swimming pool or shower, and also as a reliable shelter over the porch.

Canopies in the form of a canopy are used to shelter the surrounding area from bad weather conditions. This is an excellent option for protecting steps and thresholds from freezing in winter, which will help prevent falls and injuries.

The extension model allows you to place comfortable wicker furniture, a barbecue grill, and a swing under it. It is customary to make such shelters in the same style as the house, using similar materials and colors. Typically, the structure of such a canopy is quite large, so one side of it is attached to the wall of the building, and the other is placed on supports. But there are also stationary canopies that have supports on each side, or mixed models. Such buildings have many advantages. You can walk under the canopy at any time of the year without fear of rain or heavy snowfall.

Gazebo canopies are the most popular option among homeowners. Such gazebos can have different shapes and types. Most often you can see round and square models, there are also models in the form of a polyhedron. Designs can be open or semi-closed. Open gazebos usually have a support and a roof, while semi-enclosed models have side walls. The best place to place such structures is in picturesque green areas or hills.

Models placed above children's playgrounds are also very popular. If there are small children in the house, they will be able to play outside on swings, sandboxes, horizontal bars and slides in any weather. At the same time, the structure itself will additionally protect the playground from the negative effects of temperature and humidity, which will extend the service life of such products.

A canopy placed over the pool will make it possible to use it regardless of the weather. Such buildings can be permanent or collapsible.

Another type of similar structures are awnings, which are awnings made of thick fabric on a retractable structure. Typically used for balconies, windows, terraces and gazebos as protection from scorching sun rays. Their advantage is the ability to regulate the amount of opening.

If you have a car, a canopy in the yard will protect it from bad weather conditions and the scorching sun. This option is very convenient when guests arrive or when there is no garage in the house.

Which fasteners and profiles to choose

Unlike ordinary, more traditional types of roofing, where everything is prosaic and the method of fastening is indicated by the manufacturer, you will have to tinker with polycarbonate. And first of all, you need to decide how exactly it will be more profitable to connect the sheets together.

Profiling systems

These are made from polycarbonate or aluminum. The profiling systems are two structural connecting elements that close the ends of the slabs using bolts and sealants. And today special profiles are sold for polycarbonate roofs:

UP - end. Naturally, the ends of roofing sheets are sealed with this profile.
PSK or PSB – connecting. They connect panels in the same horizontal plane.
RP – ridge. They connect panels in a gable roof.
HP is a one-piece profile that is used for mounting small planes and arches. Those. You will make such a fastening only once, and later you will not be able to remove it.
SP and HCP are split profiles that are used for the installation of pitched roofs and their vertical parts.
PT is an end profile for polycarbonate, which has an improved design. There is already a drip and a drainage channel, thanks to which the outflow of water is improved.

And all these profiles differ in the material from which they are made.

Polycarbonate profiles

Take polycarbonate ones if maximum transparency of the roof is vital for you and in no case should there be any shadows there. Quite a life situation, by the way. In the modern world of design and architecture, for example, it has become fashionable to make the attic absolutely transparent, from where you can see everything - both the sky and the city. And inside, equip a personal office, a small gym for all family members, or a mini-bar for frequent gatherings with friends.

Aluminum profiles in this case will look terrible - like prison bars, and, of course, will ruin the entire aesthetics. It is for such design whims that transparent polycarbonate profiles were developed, which are almost invisible. And at the same time, we note that they are quite durable:

Such profiles, of course, are not load-bearing, but they can be bent as easily as polycarbonate itself. Plus, they heat up under the sun much less than aluminum ones, while having additional ultraviolet protection.

Aluminum profiles

Aluminum profiles are indispensable if you plan to build an unusual or architecturally complex roof. Such profiles provide excellent tightness and meet all reliability requirements. Therefore, if snow and wind loads are above average in your area, it is better to use such a mount.

The advantages of an aluminum profile include its length - more than 6 meters. This means that you can easily use this profile for large structures, without any joints.

An aluminum profile “facade system” is also suitable for the roof. It has a special decorative cover that covers the profile and thus masks the screws. The roof itself is factory painted in a color according to the RAL table, and therefore you can use either white or colored roofing, adding a bright accent to the design of the entire house.

But for aluminum profiles it will be necessary to use special EPDM seals, which will protect the roofing polycarbonate from transferring heat to the aluminum parts and protect against moisture getting inside. These seals are installed using a rubber hammer and a roller shutter.

Special thermal washers

Polycarbonate cannot be fixed with simple roofing screws - there are special thermal washers for this. What is their difference? The fact is that polycarbonate is a mobile material, subject to thermal expansion and contraction. And under ordinary self-tapping screws, the fastening points will eventually become covered with cracks, which will gradually increase:

And you need this:

All these rubber spacers and neoprene discs are necessary to ensure that the cellular polycarbonate does not get squeezed. If this happens, then rain or melt moisture will easily get inside the panel, and this is already a round of new problems.

Note that the lion's share of special seals that are used are made of elastomer. This material behaves well in terms of thermal expansion and ensures complete tightness of the connections. For a roof, these parameters are especially important, you will agree:

Another important task that thermal washers for polycarbonate are designed to solve is getting rid of the so-called cold bridges. We are talking about places through which cold penetrates into the structure and where, due to temperature differences, condensation forms directly on the surface of the sheet. And thermal washers allow you to give the entire structure a finished and aesthetic look. A special snap-on lid hides the screws, and the color of the washers does not stand out against the background of the entire sheet.

Moreover, such washers are sold in two types:

Polycarbonate washers. Frost-resistant, lasts 10 years or more, perfectly matches polycarbonate in color. An additional advantage is that they are equipped with a special four-circuit sealing ring made of elastomer.
Polypropylene washers. They last about 2 years, they are afraid of ultraviolet radiation, which makes them brittle. The color of the washers does not always match the shade of the tinted polycarbonate roof. But it’s more affordable, if that’s important to you.

Of course, polycarbonate washers are more suitable for building a roof from the same material. But it is also important to attach them correctly:

Step 1. Select the mounting location. This must be done slowly and carefully, because the “random” hole will also have to be closed with the same washers. At least aesthetically you will lose.
Step 2. Calculate the distance between the washers - for this we have presented a detailed table for you below.
Step 3. Select the diameter of the hole.
Step 4. Screw on the washer. This must be done accurately, not too loosely and not too tightly, so as not to press the washer. Just make sure that the sealing material does not stick to the sheets.

A screwdriver will help to secure such a washer:

Sealing tapes

All lower edges of installed roofing sheets must be covered with aluminum tape and UP profile. And not with a simple aluminum tape, but with a perforated one, which is capable of releasing condensate that has accidentally accumulated in the honeycombs. Why are holes also required to be pre-drilled in the UP profile?

Where the next panel overlaps along the wave of the sheet, use sealing tape, as well as along the fixation lines of the lower and upper overlap.

So, step by step:

Step 1. At the top of the wave, drill holes for screws - 10 mm each.
Step 2. Now fasten the screws into the drilled holes - on the left side.
Step 3: Drive screws into every other wave, starting at the bottom beam.
Step 4: Now attach screws to every third wave.
Step 5. Start fastening the last, topmost sheet on the left side.
Step 6. Fix the side overlaps of the sheets every 30 cm.

Here's more detail:

Roofing sealant

To install a polycarbonate roof, be sure to use a special roofing sealant. Moreover, you need to purchase one that is intended specifically for this material, because... they are produced on a neutral basis and do not destroy the polycarbonate itself. Sealant will be needed to seal all joints and fastenings of the transparent roof.

Beautiful examples

There are many beautiful examples showing how to design a structure.

Forged models will go perfectly with a stone or brick wall of the house.

Carved wooden gratings are suitable for canopies made in eco-style.

LED lights installed around the perimeter or in the center of the building will help add airiness.

Climbing plants and flowerpots with flowers will decorate the structure and give it elegance.

Original flower arrangements and clay products will help give your gazebo a cozy look.

Installing a barbecue or barbecue grill under a canopy will allow you to cook delicious dishes there. In such a gazebo it is nice to spend an evening with friends or play with children. It is worth putting a barbecue or grill under the canopy. If space allows, you can install a decorative waterfall or fountain here.

A convenient carport can be a worthy alternative to a garage.

To learn how to make a forged canopy in the courtyard of a private house, see the following video.

Secrets and subtleties of technology from the pros

So, we figured out a little about the sheathing. Now let's move on to working with sheets. You cannot step on the polycarbonate itself during its installation, so make special platforms.

In this case, you need to work only at positive temperatures, not lower than -5°C, so that cracks from the fastening do not appear. The fact is that roofing polycarbonate itself can easily withstand cold down to -20°C, but unless holes are drilled in it at that moment.

Otherwise, it is important to adhere to certain rules:

How to work with polycarbonate roofing sheets?

Roofing polycarbonate can be cut using either conventional cutting or a laser. But these are already machine operations, where the laser power and cutting speed are adjusted in the factory. But the edges of the cut with this method will no longer be transparent - either white or brown, depending on the cutting speed.

To drill through polycarbonate sheets, you will need high-speed drill bits, either designed for metal or with a carbide insert. This is the only way to maintain the sharpness of the cut edges of the sheets.

And one more point: during drilling, any tool heats up the polycarbonate. Therefore, if you want the drilled holes to be clean and not melted, then work with the sheets not in the hot sun, but in a cool workshop - at least. It is ideal if you can cool the polycarbonate a little in advance - but not below zero temperature, so that there is no cracking. In general, do everything you can to reduce the amount of heat generated while working on your roof.

All this is really important. After all, incorrectly made holes in polycarbonate for the roof are a whole problem. This only doesn’t really bother you in a greenhouse if water flows through the fastenings onto the plants when it rains, but for a residential building, as you understand, this doesn’t bode well.

How to properly secure sheets to the roof?

Try to use not too long panels for the roof - only up to 7 meters. In this case, always lay polycarbonate sheets with ultraviolet protection towards the top. The easiest way to cut polycarbonate is with a hacksaw with fine teeth and a circular saw.

Always make the overlap length 200 mm, 100 mm for each sheet from the fixation line on the support. Place the last fixation line within 50-100 mm. If you are making a monolithic polycarbonate roof, be sure to leave gaps in the frames to accommodate thermal expansion.

There are also special silicone linings for fastening with thermal washers for profiled polycarbonate. For wavy ones:

And for trapezoidal polycarbonate they are:

Are connecting profiles required?

But few people know that roofing polycarbonate sheets can also be glued together, and not just connected with special profiles. So, it is only important to follow just a few rules:

Clean the ends of the sheets from any contamination, especially subtle dust.
All surfaces of future glued ends must be smooth and even.
The varnish or solvent used must not thicken or change its appearance.
The room where you do all this should have as low a humidity as possible.
Use low-active varnishes - this is the only way to avoid bleaching.
The glued surfaces must remain under pressure until final curing.
Be sure to wear personal respiratory protection.

The easiest way to clean polycarbonate sheets is with isopropyl or methyl alcohol, or mild soap solutions.

If you decide to make a rather complex shed roof from polycarbonate, you will also need welding in the process. You will use it to process finished parts. Thus, welding with a hot pad (300°C) will help to achieve strength in the joints of the sheets, and hot air welding with a welding rod (120°C) will pre-dry these welded areas. Ultrasonic welding is also used, with processing at 20 kHz in the range of 25-40 microns.

And finally, you will need to sand down any unsightly parts. The easiest way to do this is to use silicon sandpaper with a grit of 400 or 600.

What about the ventilation of such a roof?

So, you have chosen polycarbonate, you have drawn up a roof design, and now it’s time to think about ventilation of the under-roof space. The fact is that in the case of a pitched roof, ventilation is not often thought about at all; even dormers are not always installed. And this, when using polycarbonate as a roofing material, will lead to its overheating, which in the heat can even cause some parts to change shape slightly.

Moreover, you should not give up partial insulation of a pitched polycarbonate roof:

As you can see, everything is simple! Got new ideas? Go for it!

Tips and tricks

In order to protect a beautiful veranda or terrace area, you just need to follow a few simple rules:

Regularly inspect the polycarbonate glazing of the terrace; if deep scratches or even cracks are found, it is necessary to rub the surface with a special cleaning agent for transparent plastic. If the damage is significant, then it is best to replace the material, cover it or seal it with a thin transparent RET film;
When preserving for the winter, it is best to cover the polycarbonate glazing of the dacha veranda with thick plastic film. If you don’t have one at hand, then an old bag or even paper glued to a soap solution may work.

A polycarbonate sheet, no matter whether it is cellular or cast, must stand in the frame with a fairly large gap, 2-3 mm for every meter of sheet. If there is no heating on the veranda in winter, then the joints and cracks must be covered with soft silicone. You can take any plumbing compound, for example, Ceresit 15CS.

For your information! According to reviews, the bulk of damage occurs at the end of February - beginning of March. With the beginning of the period of strong spring winds, the frequency of cases of polycarbonate damage doubles or triples.

Therefore, with the first days of spring, it would be right to once again visit the dacha to close the veranda and check the condition of the glazing.