GRP stands for Glass Reinforced Polyester. This is a composite material formed by strengthening plastic with glass fibres. Also known as fibreglass roof, GRP flat roofing is one of the most popular flat roofing solutions in the United Kingdom. Being in use for over 60 years with soaring popularity in recent years, GRP is employed in several commercial and domestic buildings and other applications, from water tanks to boats. With a lifespan of at least 30 years, GRP flat roofs come with the added advantage of easy installation and maintenance.

How Have EPDM Roofing and GRP Roofing Changed the Game?

EPDM stands for Ethylene Propylene Diene Monomer, an extremely durable synthetic rubber. EPDM is heat and weather-resistant thanks to its two primary ingredients, ethylene and propylene, making it an ideal solution as a roofing material. EPDM roofs can last up to 50 years when professionally installed and well maintained. Though GRP roofing and EPDM roofing cost more than other roofing alternatives, there is no denying that their impact on the scene has changed the roofing industry.

GRP flat roofing’s superiority comes down to it being a durable, lightweight, flexible, fully reinforced, and waterproof material capable of being molded to any shape. EPDM roofing can resist both subzero temperatures and extreme heat. Its resilience to the elements is impressive. EPDM also has a lower carbon footprint than other traditional alternatives like felt because of its reduced need for regular replacement coupled with its insulating properties that help bring down the building’s heating costs. Both GRP flat roofing and EPDM roofing boasts one of the roofing industry’s longest average service life.

How Much Does a Fibglass Roof Cost?

The cost of GRP fibreglass roofing varies depending on the scale of the job at hand and location. These primary costs vary depending on whether a new roof is being constructed or an existing roof is being repaired, with the latter sometimes being cheaper depending on the extent of repairs required. You might think that GRP fibreglass roofing costs a great deal more than other roofing systems given its strength and superior durability, but this is not the case. It is more expensive than felt or EPDM rubber roofing systems, but when you factor in its longevity, simple maintenance, impressive resistance to the elements and beautiful aesthetic, fibreglass roofs are worth the slightly higher costs.

Weather Resistance

GRP flat roofs are weather resilient. With a lifespan of at least 30 years, its resistance to the elements has led to its well-known durability reputation as it stands sturdy and strong through extreme weather conditions.

Prices and Durability

Before thinking of price, identify whether you need a new roof or a repair. If it’s a repair, how bad is the damage and is the cost of repairing extensive damage worth more than that of a new roof? Are there any structural repairs that need to be carried out on the roof? Any alterations required for the guttering or downpipes? You will also need to consider the surface area of the roof when budgeting for your GRP roof.

You can expect costs to be between £70-£90 per square meter for a GRP roof, although this price will differ depending on location. A DIY installation will be substantially cheaper, of course. Yes, GRP is pricier than felt, or EPDM rubber roofing systems but the costs are justified by its impressive durability making it a cost-effective solution in the long run.

DIY Difficulty

GRP roofing is not a difficult DIY project and can be handled by beginners. All that is needed is an understanding of the materials and knowing your way around a roof.

What GRP Roofing Supplies are Needed?

You want to embark on a DIY GRP flat roof and are thinking of the needed supplies. The basics of a GRP flat roofing system are the GRP resin, fibreglass mating, a hardener or catalyst, topcoat resin, the fibreglass roof trims and flashing. Do not forget:

  • Rollers
  • Buckets
  • Brushes
  • Sealants and adhesives to bond trims and flashing

Fibreglass Roof Kits

Sometimes heading to the hardware store to purchase individual items for your DIY GRP flat roofing project can become cumbersome, especially when you cannot find specific items. Not to worry though, a solution in the form of fibreglass roof kit comprising the essentials needed items for a perfect GRP flat roof installation can be purchased instead of having to buy individual items. These kits help keep overall costs down and are great for those working on a budget. Professional and DIY enthusiasts all use it. Each kit is built on the requirements of a wide variety of applications ranging from general maintenance and repair to entire flat roof constructions, which means Fibreglass Roofing Kits come with all materials needed to repair a fibreglass roofing structure as well as build.

How Does GRP Compare to Other Flat Roof Coverings?

GRP fibreglass is a safer solution compared to the other types of roof coverings. GRP flat roofing systems do not require any complicated or hazardous tools, which makes the chances of an on-site injury occurring lower. GRP flat roofing employs additional practical features such as no joints or seams on the roof’s main part. This means less chance of water creeping through gaps and into the decking. A complete waterproof solution. Topping it all is the topcoat finish, which makes the roof resistant to the natural elements. Having a reputation for strength and durability is the main reasons GRP flat roofs are generally considered a premium customer choice though slightly more expensive than other alternative options.

What Happened to Traditional Felt?

For over a hundred years, traditional felt has been a popular material for flat roofing systems. Though durable, waterproof, and cheap, traditional felt roofing has some disadvantages. It is highly flammable, produces harmful fumes during its installation, which are harmful to inhale and no longer in high demand due to alternatives like the GRP flat roofs. One primary reason traditional felt is falling behind is the powerful urge to address the climate crisis. As the world moves towards a greener ecosystem, traditional felt roofing, made from crude oil is not a sustainable option of a greener ecosystem.

Our service

We have highly skilled GRP flat roof specialists who use the best quality grade roofing materials for your GRP roofing project. Our service is perfection guaranteed as we strive to give our customers the absolute best, they deserve. All at affordable rates, so you do not have to worry about spending too much on GRP flat roofing construction or repairs.

Longer Guarantees

Our service is all about quality. That is why we boast the most extended guarantees on the market. We know what we offer and are proud to be of service, knowing our customers will have no worries at all.

Matt HAuthor: Matt Holder

Matt Holder is our in-house writer. Matt has been working in the construction industry for 10 years. From working on-site to integration himself into our office.


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