Flat Roof & Leak Repairs Across London

By inspecting the whole roof, not just the wet patch. Water can enter at a split, a failed lap or a cracked upstand and travel a long way under the membrane before it shows inside, so we check the surface, every detail and penetration, and the outlets before recommending a repair.

Most flat roofs can be repaired if the deck and insulation underneath are still dry. Localised splits, blisters and failed details can be patched with RBM or made good with liquid-applied waterproofing. Replacement only makes sense when moisture has spread beneath the membrane or the covering has failed across its whole area.

Ponding is rainwater that is still sitting on the roof around 48 hours after it stopped raining. It usually points to blocked outlets or a deck that has deflected over time. On its own it is not always a defect, but it speeds up wear at laps and details, so persistent ponding is worth investigating.

Yes. Pluvian Roofing repairs flat roofs on homes, extensions and garages, and works with property managers, managing agents, housing associations and facilities managers on commercial and residential blocks across South London and Greater London.

It depends on the size of the fault, the access and how the roof was built, so we do not publish flat rates. Every repair starts with an inspection and a written price agreed before any work begins, so you know the cost up front.