What strength do you choose for multi-wall sheets for patio roofs, carports, winter gardens and greenhouses?

If a translucent material is required for the patio roof, conservatory or carport, polycarbonate multiwall sheets are usually used. For greenhouses, too, this robust material, which you can obtain in different thicknesses, is often used. But which hollow slab thickness is suitable for the intended purpose and what has to be considered during processing?

What are multiwall sheets?

This material is translucent plastic sheets made of polycarbonate or acrylic glass. They consist of two or more superimposed plates, which are interconnected by webs. Due to this construction, between the plates chambers (= hollow chamber plates), which are responsible for the thermal insulation properties arise. Practically unbreakable and with high impact resistance, rainfall such as hail, heavy rain or snow can not affect this material.

Which web plate is suitable for which application?

Here it depends on how heavily the panels are loaded, how big the roof surface is and what thermal insulation is desired. A first overview provides the following table:

applicationStrength
Greenhouses6, 8 or 10 mm thick polycarbonate sheets
Terrace roofs, carports, unheated conservatories16 mm thick polycarbonate sheets
Heated conservatories25 or 32 mm thick polycarbonate sheets
Terrace roofs, carports, unheated conservatories16 mm acrylic glass

Which multiwall sheets are suitable for the greenhouse?

In former times, for lack of light and stable alternatives, only glass remained as a translucent covering for the greenhouse. Due to its own weight, this material made special demands on the statics and stability of the construction, so that self-construction was difficult.

Polycarbonate multi-wall sheets offer many advantages over glass:

you are

  • with the same insulation values ​​about five times lighter,
  • UV-resistant,
  • translucent,
  • unbreakable,
  • easy and
  • easier to process.

At the same time, the risk of injury, which is quite high with splintering glass, is significantly minimized.

Polycarbonate multi-wall sheets have different insulation values which are usually given as k or u value. The strength you need depends on the future purpose of the greenhouse. For a greenhouse recommend 10 mm thick plates, which hold the heat in the house. On the other hand, if you use the greenhouse to protect fruit and vegetables in the spring and to protect against cool temperatures in the summer, you will need a plate thickness of 6 millimeters.

Multi-skin sheets for patio roofs, carports and unheated conservatories

What strength do you choose for multi-wall sheets for patio roofs, carports, winter gardens and greenhouses?: choose

What strength do you choose for multi-wall sheets for patio roofs, carports, winter gardens and greenhouses?: strength

Polycarbonate cellular sheets, which are used as roofing, must withstand high loads. The covering should not only be able to put away heavy rain and hail unscathed, even when the snow is lying on the plates should not break. So here should be stable Double or triple web plates with a thickness of 16 millimeters to be used.

As terrace and carport roofing very popular are opaque multi-wall sheets. Due to the brown or matt white tint still enough light falls through the roof, but you are protected from prying eyes. Often, these also have a special UV protection, so that it does not cause unsightly discoloration, fading or damage to the plates in strong sunlight. New are web plates with pigments incorporated into the material, which reflect the sun's rays. This keeps it cool under the roof even in the hot summer months.

Which multi-skin sheets are used in heated conservatories?

What strength do you choose for multi-wall sheets for patio roofs, carports, winter gardens and greenhouses?: patio

What strength do you choose for multi-wall sheets for patio roofs, carports, winter gardens and greenhouses?: choose

For areas where it's on good thermal insulation arrives are preferred polycarbonate sheets with a Thickness of 25 or 32 mm used. These insulate through their superimposed hollow chambers in X or M structure, very good. This design also ensures optimum insulation and stability. These plates are hail-proof, which is particularly important in regions with frequent storms. Despite the strength, the light transmittance changes only slightly, so that the plants in the dark season enough brightness is available.

Acrylic glass as cover for terrace, carport and unheated conservatory

As well translucent alternative to multi-wall sheets offer themselves Acrylic sheets on. By up to almost 10 centimeters wide chamber distances, they offer a very high light transmission, which comes almost to those of glass. They also offer the following advantages:

  • good resistance to UV radiation,
  • high load capacity,
  • excellent weather resistance,
  • Provided with a surface coating, rainwater runs off without leaving unsightly stains.

However, this material is heavier than polycarbonate, which also results in a higher fracture sensitivity. In addition, acrylic glass is not as resistant to scratches.

Tips & Tricks

Multi-wall sheets are extremely easy to clean. They can be cleaned with commercial detergent and a soft sponge, even without polishing, streak-free.

Video Board: How to Install Corrugated Polycarbonate Roofing | Mitre 10 Easy As