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GRP Roofing

High-quality GRP fibreglass solution designed to add durability and water resistance to any flat roofing project.

From brands including Res-Tec and Pro GRP, we have everything you need including resin, primer, topcoat, fibreglass rolls, and more.

Complete your roofing project with confidence and enjoy fast delivery when you order before 12pm.




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Buy GRP Roofing

GRP roofing is a flexible resin that uses fibreglass strands to reinforce its durability and longevity. We sell a wide range of GRP flat roofing systems suitable for different requirements including PRO GRP, GRP1010, CRS, ResiRoof and RES-TEC Fleixtec 2020.


PRO GRP is a cold-applied system ideal for roofs with complex detailing. It is very durable and impact-resistant so it can be used in applications where foot traffic is common. Non-slip walkways can also be incorporated. Pro GRP range includes hardener, resin, topcoat & finishing tissue.


RES-TEC have two different systems; Flexitec 2020 and 1010 GRP.

Flexitec 2020 is a flexible and seamless GRP system that combines the durability of fibreglass systems with the versatility of overlay systems. It can be applied to almost any roof surface, and once installed, can be walked over in just 30-60 minutes. Flexitec 2020 range includes resin, resin accelerator, primer, primer accelerator, powder hardener & more.

1010 GRP is a long-lasting system designed specifically for flat roofing applications and combines durability, weather resistance and easy installation, to make the ideal solution for fresh installations. 1010 GRP range includes base resin, catalyst, top coat, fibreglass matting and more.

Fibreglass Flat Roofing Kits

CRS Fibreglass Roof Kits have a guarantee of 10-15 years, have a coverage of 5 - 100 sq. m and come with everything a builder or roofer will need.

Our RESI Roof Fibreglass Kits are bundled together to deliver the correct materials to roofers and builders in the UK. These high-quality kits are made to last, with a material guarantee of 20 years (longer than many other roofing membranes) and have a coverage of 10 - 100sq.m.

GRP Trims

Our GRP trims are used to complete a variety of flat roof installation projects. With products including corners, drip trims & flashings all made from fibreglass, your roof will have not only a sleek finish but a durable one as well.

What are the benefits of fibreglass and GRP roofing?

There are many reasons why GRP roofing and fibreglass materials are popular amongst roofers.

  • Durability: Made with strands of fibreglass, GRP is designed to resist heavy rain, snow, and wind, along with being incredibly durable against high foot traffic.
  • Lightweight: As a versatile roofing option, it can be installed on a wide variety of roofs without the need for additional structural support.
  • Waterproofing: As a fully waterproof system, it provides reliable protection against leaks and water damage, which is incredibly useful in areas with heavy rainfall, access to water damage or extreme temperatures.
  • Versatile: It can be customised for any roof shape or size, making it a great option for a wide range of construction projects.
  • Low maintenance: Once installed, it requires very little maintenance which makes it a great long-term cost-effective solution.
  • Long lifespan: With a lifespan that can last up to 50 years with proper maintenance, it is a reliable and long-term roofing solution that can provide peace of mind to building owners.
  • Easy installation: It is easy to install for anyone, whether you’re a DIYer or a professional builder. Some systems can be ready to walk over in less than an hour, so make sure to install them correctly.

What is fibreglass used for?

GRP roofing (also known as Glass Reinforced Plastic or fibreglass roofing) is a durable, seamless and versatile solution suitable for many residential and commercial construction projects.

  • Flat roofs: As a fully waterproof and durable solution, it can withstand harsh weather conditions and foot traffic.
  • Roof extensions: Fibreglass roofing provides a seamless and watertight finish which is needed with any roof extension.
  • Balconies and terraces: As a fully waterproof and durable solution, it is suitable for balconies, terraces, and any other outdoor living space.
  • Garage roofs: With reliable protection against leaks and water damage, it is an ideal choice for garage roofs making sure anything stored away will remain intact and not exposed to moisture or mould.
  • Industrial settings: As it is resistant to chemicals and can withstand high levels of foot traffic, it is great for warehouses and factory environments.

Trusted Supplier

UK Flat Roofing is a trusted UK supplier of GRP and fibreglass roofing solutions, with happy and returning customers across the country. We have nationwide delivery from a variety of branches, and you’ll receive fast delivery if you place your order before 12 pm.

We have deep knowledge and understanding of flat roofing systems, with over 35 years of experience, so if you need any assistance at all, get in touch with us today via Whatsapp or drop us an email at sales@ukflatroofing.com.





GRP roofing (also known as Glass Reinforced Plastic or fibreglass roofing) is a flexible roofing resin with fibreglass strands used to reinforce the product. This method of roofing is very popular amongst roofers for its seamless finish and various benefits among other types of roofing systems. It is often installed on a wide range of commercial and domestic properties due to its durability and longevity.

To install GRP roofing, you’ll need resin, matting, topcoat and catalyst, along with accessories such as GRP trims.

When installing GRP roofing, start by applying a layer of resin to the roof surface using a brush or roller. This next step depends on the system (most of ours are wet applied),carefully lay down matting over the top, pressing down to remove air underneath then apply another layer of resin ensuring there are no pin holes. Once the matting is down and the resin is set, mix the topcoat and catalyst and apply evenly using a brush or roller.

Glass-reinforced plastic is used in a variety of applications, including construction for roofing or walkways, alongside being used in boat buildings or car body repair shops.

Fibreglass and resin are two separate materials used to create the main part of a GRP roof.

Resin is a thick liquid that can be used when hardened with additional material, such as a hardener. Whereas fibreglass is a reinforced plastic made from strands of glass fibres, which are bonded with the resin.

Fibreglass will add durability to the roof, whereas resin will bind together the fibreglass and provide a protective coating.