Filon has been manufacturing and supplying high-quality Glass Reinforced Polyester (GRP) sheets in the industrial, agricultural and commercial sectors for more than 65 years. The outstanding durability, versatility and ease of installation have made GRP sheets a top choice for rooflight and roofing solutions for internal and external uses.
Internal rooflights, commonly known as laylights, are often required when working with discontinued roofing systems within older industrial buildings. In order to create seamless light transmission and insulation while not compromising existing traditional construction, we created Filon Filites – a smart, modern-day laylight solution for discontinued roofing systems.
Filon Filites are factory-assembled double-skin translucent internal rooflights manufactured from Filon GRP sheets. Designed for internal linings and used with suspended ceilings and purlin linings, our double-skin GRP box rooflights work seamlessly with external rooflights, allowing natural light to pass through whilst maintaining balanced insulation levels.
Benefits of Filon Filites
Excellent light transmission and diffusion
Standard double-skin Filon Filites units provide 81% light transmission with great light diffusion to minimise glare and hotspots.
Available in a range of sizes
Filon Filites are available in standard 900mm, 1000mm and 1200mm widths and depths of 30mm, 35mm and 40mm. Speak to one of the team today for advice on sizing for your roofing project.
High resistance to temperature change
Our internal rooflights have been designed to withstand harsh weather conditions and are unaffected by temperature changes from -20ºC to 100ºC. They will not become brittle at low temperatures and will not soften, discolour or warp at high temperatures.
Excellent thermal insulation
Filon Filites achieve a U-value of 3.0W/m²K to provide excellent supplementary insulation to external rooflights.
Fire-rated grades available
Filon Filites are manufactured with Filon translucent GRP sheets that are tested to BS 476 Parts 3, 6 & 7. The normal fire ratings of the sheets used are:
Filon Grade 300 outer: AB to BS 476 Part 3
Filon Grade 104 inner: Class 1 to BS 476 Part 7
Other combinations are available and Filon Grade 101(rated Class 0 to BS 476 Part 6) is also available if required.
Find out more by downloading the Filon Filites brochure.
Why choose Filon as your preferred supplier?
Since 1957, Filon has been at the forefront of cutting-edge innovation in the building and construction industries, providing smart GRP solutions to ensure outstanding physical, environmental and safety support. Our experience, products and knowledge are there to help you every step of the way. Contact the team today to talk through your requirements and find out the Filon GRP range.