There are three types of modern flat roofing system based on the membranes that protect the roof itself: torch-on felt, EPDM rubber, or GRP fibreglass, and torch-on felt. Each has its best-case uses, pros and cons, so let’s take a closer look:
EPDM Rubber Roofing
This is a rubber membrane that’s installed in one sheet and bonded with adhesive to the roof deck. It’s the newest type of system and has become very common in residential buildings. It has a 50-year material warranty and no seam failures because it’s a single sheet. It also handles building movements very well without cracking and is light, low-maintenance, and UV-resistant.
Roofers Selsey, such as https://www.randsroofing.co.uk/roofing-services/roofers-selsey/, will also tell you that it needs careful installation as it can be punctured by sharp edges. However, it’s great if you want longevity above all else.
GRP Fibreglass Roofing
GRP is a rigid fibreglass system which is poured in a liquid form over a reinforcing mat to create a jointless surface that then cures to a durable, ultra-hard surface. Again, it’s totally seamless, so there are no seams that can fail, and it can be walked on, making it great for balconies. It also comes in a wide range of colours and finishes, but it is more expensive than felt or EDPM and needs dry conditions for installation. It can also crack.
Felt Roofing Three-layer felt is the traditional system you’ll see using layers of felt bonded with heat. It’s still reliable and cost-effective and has been in use for decades.
