General

Zenon GRP rooflights are a thermoset material, rather than thermo plastic, which means that they do not soften or melt in high temperatures. They are available in a range of fire classifications to suit different applications.

The test and classifications for non-fragility are detailed in a publication known as the ACR(M)001 ‘Red Book’. Broadly speaking, the highest classification for most roof assemblies will be Class B.  It is a classification for the whole roof assembly irrespective of the presence of a rooflight, so

In a typical industrial shed building with high bay sodium lighting, the energy consumption of the artificial lighting is often around four times that of the energy lost through the reduced thermal performance of the rooflights compared to the well-insulated areas. Even with low energy

‘CE’ is the abbreviation of French phrase “Conformité Européene” which literally means ‘European Conformity’. All construction products that are covered by a harmonised European Standard must be manufactured and assessed against the Standard and carry the CE mark to be sold in Europe. This is

You can find a comparison of the two materials in our GRP vs Polycarbonate sheet – to view, please click here.

No light transmitting materials allow 100% of the light to pass through due to surface reflectance and some absorption. However, with transparent materials there is usually no perceptible spreading of the light. Diffusing materials can vary in the degree in which light is scattered through them, and

They are basically the same thing, however smaller individual units with transparent apertures tend to be referred to more often as ‘skylights’.

Generally, ‘rooflights’ or ‘skylights’ are components installed in roofs to let daylight into a building where windows cannot be installed or are insufficiently effective. Roof windows tend to be installed in pitched slated or tiled roofs. Usually the can be opened in the same way