Felt Roofs across Greater London

Felt has moved a long way from the thin, single-layer sheets that once covered London garages and extensions. Modern felt roofs use polymer-modified bitumen membranes, built up in layers and bonded to the deck, with a mineral-surfaced cap sheet on top. The result is a tough, flexible covering that handles temperature swings and sunlight far better than older felt, at a cost that keeps it one of the most practical choices for a flat roof.

Ashlar Roofing installs felt as a complete system, not a single sheet laid over whatever is already there. That means stripping the old covering, checking the deck, adding insulation where it makes sense, then laying an underlay and cap sheet with carefully formed upstands, drip edges and outlets. Where a naked flame is not suitable, such as against timber cladding or under windows, cold-applied or self-adhesive layers can be used instead, so awkward areas get the same protection.