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Home Flat Roofing GRP rooflights contribute to a sustainable solution
Flat Roofing

GRP rooflights contribute to a sustainable solution

by Matt Downs

Hambleside Danelaw’s Zenon brand of GRP rooflights is able to contribute to the government’s push for sustainable construction thanks to a number of features and benefits.

The GRP in-plane rooflight has attained an Environmental Product Declaration (EPD) from the Building Research Establishment (BRE), which means they can contribute towards a building’s Building Research Establishment Energy Assessment Method (BREEAM) rating.

This means the Zenon GRP in-plane rooflights contribute a minimum 1.5 points towards BREEAM ratings when used as part of a metal roof system in the materials category. They can also help in the ENE01 and HEA1 Energy and Health & Wellbeing categories.

Beyond BREEAM, rooflights reduce the need for supplementary artificial lighting and heating. A building with 10% rooflights can require supplementary electric lighting for 30% more hours in a working year than a building with 15% rooflights.

Typically, a rooflight can achieve 1.3W/m2K or better, saving heat energy. Indicative data for various rooflight permutations can be viewed on the Zenon website using the configurator tool, facilitating an understanding of the specification options.

Zenon GRP rooflights do not emit any chemicals once installed, so are safe to use with grey water systems, and in green roof schemes. At the end of their life they can be broken down into constituent parts and turned into solid recovered fuel.

Zenon Evolution GRP uses pioneering technology to employ less resin in the manufacturing process, resulting in a lighter weight, high-strength sheet with good light transmission.

The use of Zenon Evolution as the weather facing sheet creates a rooflight that is up to 40% lower in embodied carbon than conventionally reinforced alternatives offering equivalent strength. Additionally, Hambleside Danelaw’s pioneering and patented cellulose acetate Insulator core will offer improved U-values compared to traditional multi-layered systems, and lower embodied carbon in a material that is biodegradable at the end of its life.

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