The unseen preparation done properly
Firm base beneath the felt
We don't lay a fresh waterproof surface over an obviously weak deck.
Laps sealed against rain
We form the joints carefully to stop wind-driven water reaching below.
Edges finished securely
We protect vulnerable perimeters, outlets and changes in roof level.
A practical covering with no room for shortcuts
Felt can provide a practical waterproof finish for garages, extensions, outbuildings and other suitable low-pitched roofs. Its performance starts below the visible surface. The deck must be firm, the falls must lead water towards the outlet and each layer must sit correctly. We prepare or replace damaged substrate where agreed, then build the system with sealed laps, secure edges and properly formed upstands. Care at wall junctions and outlets helps stop water slipping beneath an otherwise sound covering.
Repair worn areas or renew the system
Blisters, cracks, open seams and worn surfaces can show that a felt roof needs attention. Water beneath the covering may also soften the deck or travel beyond the first visible mark. We assess how far the defect extends before deciding whether local repair is sensible. Where deterioration is broad, stripping the failed layers allows us to inspect the base and correct weak details. The finished surface matters, but durable felt roofing depends just as much on preparation, drainage and cleanly sealed joints.
Frequently asked questions
Which roofs are suitable for felt covering?
Felt is commonly used on suitable flat and low-pitched roofs, including garages, extensions and outbuildings. We check the deck, falls, outlets and junctions first because the roof shape and drainage still need to support the system.
Can a blistered felt roof be repaired?
Sometimes. We assess whether the blister is isolated and whether moisture has affected the layers or deck below. A local repair may work on an otherwise sound roof, while widespread blistering or open seams can point towards renewal.
Do you replace damaged decking before laying felt?
We can repair or replace accessible damaged deck sections as part of the agreed scope. The substrate must provide firm support for the felt layers and correct falls, so we inspect it rather than covering obvious softness or decay.