GRP is an immensely versatile material that combines lightweight with inherent strength to provide a weather resistant finish, with a variety of surface texture and an unlimited colour range available.
GRP was developed in the UK during the Second World War as a replacement for the moulded plywood used in aircraft radomes (GRP being transparent to microwaves). Its first main civilian application was for building of boats, where it gained acceptance in the 1950s. Its use has broadened to the automotive and sport equipment sectors as well as our doors.
The cost to upgrade from a uPVC door to GRP is minimal but combined with the high density core the door will provide excellent sound and heat insulation with very low expansion or contraction characteristics.