Flat roofing covers extensions, garages, dormers, porches and outbuildings, anywhere a pitched roof isn't practical. It isn't truly flat, there's always a slight fall built in so water runs to the outlet rather than sitting on it. We work mainly in EPDM rubber and fibreglass (GRP). Both are laid as a single continuous membrane with no seams across the middle, which is where older felt roofs almost always fail. Properly installed, you're looking at decades rather than the few years people expect from flat roofs.