GRP & EPDM Roofs

GRP roofing is the use of glass reinforced polymer and resins to form a waterproof covering on roofs such as bay windows and garages.

EPDM is an extremely durable synthetic rubber roofing membrane (ethylene propylene diene terpolymer) widely used in low-slope buildings. Its two primary ingredients, ethylene and propylene, are derived from oil and natural gas.

The main properties of EPDM are its outstanding heat, ozone, and weather resistance and we at CDBJ like the fact that on flat or shallow pitch roofs it can be applied in one single piece so reducing the amount of joints and in turn the possibility of weaknesses or leaks.

Having applied both GRP and EPDM roofs we favour EPDM in most situations.

Leaking bay window roof, the lead had failed after many years.
New GRP (fibreglass) roof fitted by CDBJ.
The crown mouldings had also perished on this bay window.
New crown mouldings and fascias fitted.
This extension was built by CDBJ & fitted with and EPDM (rubber) roof.


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