When it comes to flat roofing, two of the most popular materials are fibreglass (GRP) and rubber (EPDM). Both have their place, but more and more homeowners across Devon are choosing fibreglass for its durability, appearance, and long-term performance.
At South Hams Roofing Services, we specialise in both, but here’s why fibreglass often comes out on top.
1. Durability and Lifespan
Fibreglass Roofing (GRP): A well-installed fibreglass roof can last 30 years or more with minimal maintenance. It’s resistant to cracking, splitting, and UV damage, making it one of the most durable roofing options available.
Rubber Roofing (EPDM): Rubber roofs generally last around 15–20 years. While flexible and weather-resistant, they can be vulnerable to punctures, shrinkage, and edge lifting over time.
👉 Winner: Fibreglass – it simply lasts longer and needs less upkeep.
2. Seamless Finish
Fibreglass: Installed as a single, continuous layer, fibreglass roofs are completely seamless. This means there are no weak points where water can seep through—ideal in a rainy county like Devon.
Rubber (EPDM): Rubber roofing often comes in large sheets, but on bigger roofs, joins and seams may be required. Over time, these can become vulnerable to leaks.
👉 Winner: Fibreglass – a totally watertight finish.
3. Strength and Load-Bearing
Fibreglass: Strong enough to walk on, fibreglass roofs are perfect for balconies, terraces, or even areas where ladders and maintenance teams need access.
Rubber: While EPDM is flexible, it’s not designed for heavy foot traffic. Sharp objects, tools, or even garden furniture can puncture the surface.
👉 Winner: Fibreglass – built to withstand everyday use.
4. Appearance
Fibreglass: With a smooth, modern finish available in different colours, fibreglass roofing often looks more aesthetically pleasing than rubber. It can even be matched to surrounding features for a smarter appearance.
Rubber: EPDM is generally only available in black, giving it a more industrial look that doesn’t suit all properties.
👉 Winner: Fibreglass – smart, clean, and versatile.
5. Maintenance
Fibreglass: Very low maintenance. Occasional cleaning and a check of the trims are usually all that’s required.
Rubber: Rubber roofs are relatively low-maintenance too, but they can shrink or pull away at the edges over time, especially if exposed to extreme weather.
👉 Winner: Fibreglass – less likely to require repair.
6. Cost-Effectiveness
While fibreglass can cost slightly more to install than rubber, its longer lifespan, minimal repairs, and improved durability make it the most cost-effective option in the long run.
Think of it as an investment—you’re paying for peace of mind for decades to come.
Which Roof is Best for You?
If you want a roofing option that:
✔ Lasts over 30 years ✔ Looks modern and neat ✔ Is tough enough to walk on ✔ Requires minimal maintenance
… then fibreglass roofing is the ideal choice.
EPDM rubber roofing can still be a good budget-friendly option for smaller roofs and garden buildings—but for long-term value and performance, fibreglass is hard to beat.
Expert Fibreglass Roofing in Devon
At South Hams Roofing Services, we’ve installed hundreds of fibreglass and rubber roofs across Devon. Our expert team can help you choose the best solution for your property and budget.
