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Choosing the right flat roof system is essential for long-term performance, cost efficiency, and weather protection. With so many materials available, it can be difficult to determine which option best suits your project.
In this guide, we compare the five most popular flat roofing systems:
– Concrete
– Asphalt
– Felt
– EPDM Rubber
– Fibreglass (GRP)
You’ll discover their pros, cons, lifespan, and best uses, helping you make an informed decision.
Advantages
Considerations
Best for: Large commercial or structural applications where strength is critical.
Advantages
Considerations
Best for: Cost-conscious homeowners needing a quick roofing solution.
Advantages
Considerations
Best for: Reliable, mid-range roofing when installed by certified professionals.
EPDM (Ethylene Propylene Diene Monomer) is a popular synthetic rubber roofing material widely used in residential projects.
Advantages
Considerations
Best for: Residential flat roofs requiring flexibility and sustainability.
Fibreglass roofing, also known as GRP (Glass Reinforced Plastic), has become one of the most popular modern flat roof systems.
Advantages
Considerations
Best for: Domestic and commercial roofs needing a long-lasting, low-maintenance solution.
|
Material
|
Lifespan
|
Cost
|
Durability
|
Maintenance
|
Best Use
|
|---|---|---|---|---|---|
|
Concrete
|
40+ years
|
High
|
Excellent
|
Low
|
Heavy Duty Structures
|
|
Asphalt
|
15-20 years
|
Low
|
Moderate
|
Moderate
|
Budget roofing
|
|
Felt
|
15-25 years
|
Medium
|
Good
|
Moderate
|
Traditional Systems
|
|
EPDM
|
20-30 years
|
Medium
|
Good
|
Low
|
Residential eco-friendly roofs
|
|
Fibreglass
|
20-30+ years
|
Medium-High
|
Excellent
|
Low
|
Modern, high-performance roofs
|
If you’re looking for a durable, low-maintenance, and modern roofing solution, fibreglass (GRP) is an excellent choice.
TriRoof offers a full range of GRP roofing products, including:
Low-Cost Kits:
Includes Lloyd’s approved resin, matting, topcoat (light/dark grey), and tools
Premium Kits:
Includes flexible resin, fire-retardant topcoat, matting, and tools
The best flat roofing system depends on your budget, building structure, and long-term expectations:
Tip: Always use qualified installers to ensure your roofing system performs as expected and remains fully watertight.
Tricel and ECMS restored a WWII-era commercial flat roof at IWM Duxford using TriRoof HPX System, delivered ahead of schedule with a 20-year guarantee.
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Boost your flat roof’s performance and appearance with the perfect GRP trims. Get expert advice and top product tips in our complete guide.
Roofing resins like Original GRP, HPX, MultiFlex, Polyurethane, and Acrylic offer unique benefits for residential and commercial properties. Learn about the advantages, applications, and features of each resin type to choose the best option for your roofing needs.