Top of the range is the Durolite Heat Guard 4 (HG4) and 8 (HG8) which reduces the heat transmission through the sheet without loss of light transmission, used effectively as natural lighting strips over workshop areas and super market check outs. Remember the higher the number, the more heat is transmitted away from the buildings interior.
Dimond’s Durolite in a 1.4 mm thick sheet still uses the 100 micron thick gel coating as in HG4 and HG8 to protect the sheet fibres and is used widely on commercial applications to allow natural lighting for up to 25 years.
A more economical sheet with a limited life is the Maxilite Ultra range with a 30 micron thick polyester surface film adhered to a 1.1 or 1.4 mm thick sheet. Maxlite Ultra carries a 15 year warranty.
For low cost buildings the Maxilite sheet provides an economical solution with a thinner 20 micron thick polyester surface film adhered typically to a 1.1 mm thick sheet. This is warranteed for a 10 year period.
Other products in the Durolite range are webglass which uses a heavy woven mat allowing the sheet to be trafficable without needing safety mesh.
The range would not be complete without Duraclad, a fully coloured sheet. It is not intended to allow light through or take foot traffic and is typically suitable for corrosive environments.