Engineered for thermal efficiency
Multiwall polycarbonate 20 mm is a high-performance, UV-protected glazing material designed for maximum thermal efficiency in demanding outdoor applications. Its thick, five-layer structure creates a reliable barrier against heat loss, making it a smart choice for projects where maintaining a stable temperature is your top priority.
Whether you are building an industrial roof or looking to extend your growing season in a cooler region, this sheet provides the structural rigidity you need. The clear finish ensures plenty of natural light enters your space while the material works hard to keep the warmth inside.
Technical specifications
- Brand: Arla Plast
- Type: Multiclear® 5X
- Thickness: 20 mm
- Mass: 2800 g/m²
- U-value: 1.8 W/m²*K
- Fire class: B-s1
- Max. width: 2100 mm
Why this variant excels
This 20 mm sheet is built for strength and energy savings. With a mass of 2800 g/m², it offers excellent impact resistance, standing up to the elements year after year.
The integrated UV protection prevents yellowing and degradation from sun exposure. It is a reliable, long-term investment for any outdoor structure requiring a balance of light and insulation.
Installation and compatibility
For the best results, ensure your support structure is designed to handle the weight and thickness of these panels. We recommend using sealing tapes on the open channels to keep moisture and debris out of the internal structure.
If you need a slightly lighter option for your project, you can explore our 16 mm clear polycarbonate. Always verify your rafter spacing before starting your build to ensure a secure fit.
Important information
- 10-Year Warranty Covers discoloration caused by weather, as well as loss of impact resistance and light transmission.
- Cutting Tolerance The maximum allowable cutting deviation on the edges is 4 mm.
- Internal Structure The internal design (channels shape) of the sheets may vary based on stock levels, but the technical specs are identical. We never mix different structures in the same order to ensure a uniform look.
Show 3 more
- UV Protection & Installation Polycarbonate sheets must be installed with the UV-protected side facing up (facing the outside) for the protection to work. The UV side is clearly marked on the protective film.
- Handle with Care Handle the sheets carefully to prevent scratches and damage.
- Storage Store in a cool, dry place away from direct sunlight.
Use cases and compatibility
This sheet is ideal for industrial roofs, terrace covers, and greenhouses where thermal insulation is the primary requirement to maintain warmth during cold winter months effectively.
Select a thinner 16 mm polycarbonate sheet if your project prioritizes maximum light transmission over thermal insulation, or choose a different variant if your structural requirements demand even higher rigidity.
Ensure your support system accommodates the 20 mm thickness and weight, and always protect the open sheet channels with sealing tapes to prevent moisture and debris accumulation inside.
