GRP Fibreglass Roofing

RoofPro provides specialist fibreglass roofing installation and repair in London. We have the expertise to ensure any fibreglass roofing work is completed to the highest standard.

Fibreglass roofing also known as GRP (glass reinforced polyester) is one of the most popular flat roofing installations in London. Fibre glass is comprised of polyester resin and fine mat glass fibres, which are then mixed to create a laminate.

Fibreglass roofing as been used for over 60 years as a reliable source for covering and being weatherproof. GRP roofing is highly known for its simplicity and safety, as well for having a longer life span than a felt roof.

Durability: Fibreglass roofing systems are known for their strength and durability. If done by a professional and correctly fibreglass roofing can last for years.

Weight: Not only does fibreglass roofing work on complex roof shapes but it can offer the same amount of protection as other materials in a lightweight form. This is great for green roofs.

Repairs: Repairing fibreglass roofing is an efficient process due to the material being used.

Damage to the glass reinforced polyester can manifest in various types of ways.

To repair the roof the same resin used in the original construction of the fibreglass needs to be used. Matching all repairs as closely to the original build is important as this will act as a secondary bond.

GRP roof cracking usually happens when the fibreglass hasn’t been installed properly. A fibreglass roof can heat up during the summer, this can cause the roof to expand. Then in the evening once it’s cooled down the roof contracts. This is known as thermal expansion and causes the GRP to crack open.

This is due to the roof not being installed without enough space between the perimeter edges and the board.

Alligatoring

When a GRP roofing system as reached the end of its lifespan, fibreglass starts to lose it’s elasticity. Once this happens the roof will look shrivelled and cracked. The only solution for this is to replace the fibreglass roof.

Pinholes

Pin holes are small holes on the surface of the GRP roof. This occurs when there hasn’t been enough topcoat added to the roof during construction. When these holes are left alone it can cause water to get stuck and cause leaks.

To fix the holes in a GRP flat roof, fresh resin needs to be applied. This will seal them to stop any further damage.

Based in South West London, we’re experts in the installation, repair and maintenance of fibreglass roofing. For your hassle free, no obligation quote, contact us today.