It is often used on small domestic installations , but usually fails prematurely when used on larger scale projects .
Unlike other roofing materials , GRP is not really a roofing material and has properties that render it better suited to small craft construction .
GRP is often used on small domestic installations , but usually fails prematurely when used on larger scale projects .
Unlike other roofing materials , GRP is not really a roofing material and has properties that render it better suited to small craft construction .