A proven system for
creating a seamless,
watertight finish on
flat roofs

Fibreglass roofing, also known as GRP (Glass Reinforced Plastic), is a proven flat roofing system that delivers a seamless, watertight finish built to last. Installed using flexible fibreglass layers combined with GRP resin, it creates a tough, joint-free surface that’s highly resistant to cracks, leaks and weather damage. Its strength, clean finish and modern appearance make it ideal for extensions, garages, porches and commercial buildings alike.

One of the key advantages of GRP roofing is its versatility — it can be finished with a smooth or textured surface, and even colour-matched to complement your home. With proper installation, a fibreglass roof can last 30 years or more with minimal maintenance. For homeowners seeking a strong, durable and low-maintenance flat roofing solution, fibreglass offers a reliable, long-term investment that looks as good as it performs.

At ACE Flat Roofs & Carpentry, we professionally install fibreglass and GRP roofing systems across Monaghan, Louth, Cavan, Dublin, Carrickmacross, Dundalk, Drogheda and Kingscourt — delivering durable, high-quality roofs that stand the test of time. We use trusted brands like Tricel TriRoof GRP, Tricel TriRoof MultiFlex and Restec FLEXITEC 2020

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FAQs

What is GRP roofing?

GRP (Glass Reinforced Plastic), often called fibreglass roofing, is a strong, seamless, and watertight system created with resin and fibreglass layers.

How long does GRP last?

A well-installed fibreglass roof can last 25–30 years or more with minimal maintenance.

Can it be repaired if damaged?

Yes, repairs can usually be carried out quickly and effectively by applying more fibreglass and resin to the damaged area.

Can GRP roofing be customised?

Yes, it can be finished in different colours and textures, making it a versatile choice for matching property styles.

Where is GRP most commonly used?

GRP is popular for extensions, garages, porches, sheds, and commercial roofs where a smooth, modern, and reliable finish is needed.

How long does GRP last?

A well-installed fibreglass roof can last
25–30 years or more with minimal maintenance.