Twin Wall
Twin-wall sheets
A light-transmitting solution for lightweight glazing systems.
Products
Multiwall polycarbonate for your project
Multiwall polycarbonate is a layered material used in structures where light transmission, low weight, and resistance to environmental conditions are important.
It is most commonly used in roof and wall systems, greenhouses, industrial and commercial buildings, and lightweight structures.
The right solution is selected after assessing the specific structure, loads, dimensions, and required sheet thickness.
Sheets
Choose by structure and application
Multiwall sheets are grouped by internal structure and thickness. These parameters affect rigidity, weight, thermal performance, and suitability for a particular structure.
Triple Wall
Triple-wall sheets
A three-wall structure that balances light transmission with structural stability.
Triple X
Triple X sheets
An X-reinforced structure for constructions exposed to higher loads.
Five Wall
Five-wall sheets
Greater rigidity and improved thermal-insulation performance for more demanding structures.
U / H / CAP & BASE
Installation profiles
For joining sheets, protecting open channels, and creating a technically complete installation system.
Structures
How the internal structures differ
The diagram helps compare the main structures. The final sheet type and thickness are selected according to the requirements of the specific structure.
Twin Wall
Twin-wall sheet · 4–10 mm
Triple Wall
Triple-wall sheet · 16–20 mm
Triple X
X-reinforced sheet · 16–20 mm
Five Wall
Five-wall sheet · 10–12 mm
The diagrams are illustrative, not to scale, and do not replace a technical design or load calculations.
Properties
Key properties of multiwall polycarbonate
Properties depend on the specific sheet, thickness, colour, and selected configuration.
01
Thermal insulation
The multiwall structure helps reduce heat transfer and provide better thermal insulation in different climate conditions.
02
Light transmission up to 84%
Clear sheets can transmit up to 84% of natural daylight.
03
Temperature range: from -40 to +120 °C
The material retains stable properties across a wide temperature range.
04
Filters 98% of UV radiation
The protective layer filters more than 98% of UV radiation and helps protect the material.
05
10 / 15 / 20-year warranty
The standard warranty is 10 years. With additional solutions, it can be extended to 15 or 20 years.
06
Behaviour in fire
When exposed to fire, polycarbonate melts without producing burning droplets. The specific fire-reaction class depends on the product and is stated in the technical documentation.
Strength
High impact resistance and low weight
01
4 ×
more impact-resistant than PVC of the same thickness
02
10 ×+
more impact-resistant than acrylic (PMMA) of the same thickness
03
200 ×
more impact-resistant than glass of the same thickness
Multiwall polycarbonate sheets offer high impact resistance while remaining lightweight. Depending on structure and thickness, sheets weigh 0.55–3.2 kg/m².
The stated values are indicative and may vary by product. Project decisions must be based on the technical documentation for the selected sheet.
Production
Applications and responsible resource use
Customisation options
Sheets can be adapted to the requirements of a specific project.
- Cutting to specified dimensions
- Protective film with individual branding
- UV protection on both sides
- Option to extend the warranty to 15 or 20 years
- Pre-prepared sheet sets
- Custom colours and other solutions as required
Sustainability
Raw materials are used responsibly, with environmental requirements taken into account.
- Production offcuts and cutting waste are recycled and returned to the process
- At the end of their service life, sheets can be reused
- Recyclable protective films and packaging materials are used
Use
From storage to maintenance
Storage and transport
Sheets must be protected from surface damage and deformation of their internal structure.
- Store horizontally on wooden pallets; do not stack more than three pallets in one place
- Protect from direct sunlight and precipitation
- Lift sheets only on pallets; do not lift them directly with forklift forks or crane slings
- Remove the protective film only during installation and without sharp tools
Installation and care
Correct installation and gentle cleaning help preserve sheet performance.
- Wear protective gloves during installation and use load-distributing supports
- Do not walk directly on the sheets
- Clean with warm water, mild detergent, and a soft cloth or sponge
- Clean larger surfaces with a water jet or steam not exceeding 90 °C
Warranty and standards
10-year warranty, extendable to 15 or 20 years
The warranty covers the effects of natural material ageing caused by environmental exposure, including reduced light transmission or changes in mechanical properties. It does not cover damage caused by strong winds, hail, excessive snow loads, improper use, or installation.
The quality-management system complies with ISO 9001:2015, while the manufactured polycarbonate sheets meet the requirements of the EN 16153:2013+A1:2015 product standard. Detailed warranty terms depend on the selected product and configuration.
Project
Selecting the right structure, thickness, and configuration
When selecting a solution, the structure, loads, dimensions, and conditions of use are assessed.