Flat Roofing, Flat Roof Repairs & Replacement

Common flat roof problems

Older felt roofs blister, split and lift at the edges once the material has aged. Poor detailing at upstands and around outlets is the other frequent culprit.

• Ponding water that never drains after rain
• Blistering, cracking or splitting in the membrane
• Lifting or perished edge trims and upstands
• Damp appearing on the ceiling below, often near a wall junction
• Failed seals around rooflights, vents and outlets

Repair or recover?

A sound deck with a single localised failure can often be patched and sealed for a good few more years. A deck that has gone soft underfoot, or a covering that is splitting in several places, needs stripping back and recovering — patching that is throwing money at it.

We check the deck itself before quoting, because a new membrane over a rotten deck is a repair that will fail.

New flat roofs

For new work we build in proper falls to the outlets, fit insulation where it is required and finish the edges, upstands and abutments so water has nowhere to sit. Where a flat roof meets a wall or chimney we tie it in with leadwork rather than relying on sealant.