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GRP Roofing

GRP (Glass Reinforced Plastic) Roofing is one of the most common methods of Flat Roofing in the UK and Ireland.

 It has been used for over 40 years in both commercial and domestic roofing applications.

What’s involved in GRP Roofing?

A thermosetting polyester resin is mixed with a catalyst and applied to fibreglass mat over wooden OSB Boards. Once the resin has cured, the fibreglass mat becomes rigid and virtually unbreakable.

Finally, a layer of Topcoat is applied to the Fibreglass which provides a waterproof finish and is resistant to weathering.

For further information on GRP Roofing applications and installation tips, check out our guidelines.

What are the advantages of GRP Roofing?

Long life expectancy

Most GRP Roofs once applied correctly will last in excess of 20 years. Once the roof has been completed, there will be no seams reducing the risk of water penetration.


Compared to traditional roofing systems such as steel or concrete, GRP Roofs are much more lightweight. This makes the materials easier to handle and puts less stress on the rest of the structure.


GRP Roofs are extremely adaptable to size and finishes. The material is easily shaped and will work with virtually any sized roof. The roof can be finished with a standard or non-slip finish. Depending on the estimated footfall the roof can be finished with 450g matting (no footfall) 600g matting (light footfall) or 900g (heavy footfall).

Cost Effective

GRP materials are readily available and can be used by DIY Enthusiasts. For this reason, with the right ‘know-how’ GRP Roofing methods can often save the homeowner time and money.

Reduced Risk of Onsite Accidents

In comparison to Torch on Roofing (Felt), GRP Roofing is applied cold. This reduces the risk of on-site accidents as no heat torches are required.

Resistant to Corrosion

GRP is inert, which means it does not rot or corrode. This puts GRP roofs in a prime position when dealing with unpredictable, harsh climates. 

Easy to Maintain

GRP Roofs can be easily maintained and cleaned. A simple hosing down of the roof with water and a light brushing will keep the roof clean.

Buy GRP Roofing Materials

Buying GRP Roofing Materials online has never been easier!

FibreGlassDirect is one of the largest GRP Roofing suppliers in the UK and Ireland. We have supplied fibreglass materials for over 40 years.

We stock a complete range of

 Shop GRP Roofing Supplies