If your flat roof needs replacing, you will probably be offered three main options: felt, GRP and EPDM. Each has its strengths, and the right one depends on the roof, the budget and what you want from it.
Felt
Felt roofing, usually in multiple layers, is the traditional choice. It is the lowest cost to install and familiar to most roofers. Its seams and laps are potential weak points, and it generally does not last as long as the other two, but modern high-performance felts are better than the older types. It can suit a simple roof where cost is the priority.
GRP
GRP is a liquid resin laid over glass fibre matting on a timber deck, forming a hard, seamless surface. It is strong, can be walked on and is often used where the roof will be used as a small terrace or has an awkward shape, because it moulds around details. It needs a good, stable deck, because the surface is rigid and cracks if the structure moves too much.
EPDM
EPDM is a flexible rubber sheet, bonded to the deck and laid in one piece wherever possible. Fewer joints mean fewer weak points, and it copes well with movement and temperature changes. It suits garages, extensions and porches particularly well. See our EPDM Rubber Roofing section for more.
How to choose
Think about the shape of the roof, how many details it has, whether people will walk on it and how long you plan to stay in the house. Ask for the options to be explained and compare what each includes, such as insulation, trims and drainage, rather than just comparing totals.
We look at your roof first and give an honest recommendation. See our Flat Roofing section or call 07766 547309.
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