- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 17 May 2018
Glass reinforced plastic GRP
Glass reinforced plastic (GRP), is sometimes referred to as; glass reinforced polyester, fibreglass, glass-fibre reinforced plastic (GFRP), fibre reinforced plastic (FRP) or fibre reinforced polymer (FRP).
It is a composite, laminate material that was first developed in the 1930’s and consists of glass fibres used to reinforce a plastic, typically a polyester resin. The glass fibres can be use as ‘random’ short chopped strands formed into a mat, or they can be gathered together into ‘rovings’ (bundled rope), or woven into a fabric.
GRP can be mass produced or built up by hand, and after curing, forms a complex matrix of plastic and glass fibre. The composite properties of high-strength glass fibre and highly-resilient plastic, make GRP strong, lightweight and weather and corrosion resistant. It can also be manufactured to be fire retardant. As a result, it is suitable for a very wide range of applications such as boat building, car bodies, cabinets, helmets and so on.
In construction, these characteristics, mean that it is easy to install, requires little supporting structure, is durable and low maintenance. As a result, it is used to manufacture components such as:
- Architectural mouldings.
- Fascia panels.
- Tanks, planters and linings.
- Storage containers.
- Doors and door surrounds.
- Window surrounds and sills.
- Cladding panels.
- Walkways and railings.
- Dome structures such as radomes.
It can also be used for temporary applications such as formwork.
GPR is a fairly brittle material, but is relatively easy to repair when damaged.
 Related articles on Designing Buildings Wiki
Featured articles and news
Gustavo Giovannoni’s role in integrating modern planning requirements into historic town centres.
Against Hackitt's recommendations, the government are to consult on combustible cladding ban.
People or density - can we create urban liveability at ever-increasing densities?
3D printing is the computer-controlled sequential layering of materials to create 3D shapes.
Hackitt review calls for a radical rethink of the whole system and how it works.
Life cycle assessment is used to total up the environmental impact of a product’s supply chain. But why building LCA?
The government warns building owners of a performance issue with Grenfell fire doors.
Ramboll discusses how digitisation is contributing to how they design, engineer and construct in new and different ways.
'Carillion could happen again, and soon' is the stark warning from the heavily critical final report into Carillion's collapse.
In the wake of British architect Will Alsop's death, read about one of his most distinctive buildings.