Glass-reinforced plastic

Acronym and details:   GRP.  A composite material made of glass fibres and plastic usually polyester, but polyamide and polypropylene are also used

Group:   thermoset

Developed:   during World War 2; first used in civilian life in 1950s

Trade names:   Fibreglas

Manufacturing process:  resin transfer mouldingcompression moulding or fabrication: hand-laying in an open mould

Cost:   low

Colour:   any

Transparency:   translucent to opaque

Rigidity:   rigid

Feel:   hard

Smell:   none


Typical uses:   very large containers, boat hulls, car panels, sculptures e.g. by Claus Oldenburg and Philip King

Degradation:   relatively stable