Pump House Close
Renforth Street, London
Leak detection on an outbuilding flat roof, followed by full waterproofing.
- 32m²
- Residential
- 3 days
London
Flat Roof Repair in London
Leaking extension, garage, dormer or commercial roof in London? We find where the water is getting in, fix it properly and seal the roof with a guaranteed waterproofing system.
How we assess a repair
Before recommending anything we check whether a targeted repair will genuinely last, or whether the roof needs re-waterproofing. We look at:
- Where water is getting in, which is often not directly above the stain
- The extent of splits, blisters and failed laps across the whole roof
- Condition of outlets, upstands and flashings
- Whether the deck is dry and sound underneath
- The age of the roof and whether repeated patching has already failed
Repair or overlay?
Small, isolated defects on an otherwise healthy roof can be repaired. Where the covering is failing generally, overlaying the whole roof with Ultraflex is usually better value than repeated call-outs, and it comes with up to a 20-year guarantee.
Across London
We cover all London boroughs, from Victorian rear extensions and mansion block roofs to hospital and office estates. Typical domestic repairs and overlays are completed in 2-3 days.
London flat roof projects
Richmond Extension
London
A rear extension made fully watertight for year-round use.
- 45m²
- Residential
- 3 days
Barnet Hospital
Barnet, London
Targeted drainage repair, then waterproofing across multiple external flat roofs.
- Commercial
- 2 days
Frequently asked questions
We prioritise active leaks and can often attend within days. On Albion Road we mobilised within days of an emergency survey.
Only if a patch will genuinely last. If the roof is failing generally we'll explain why and give you the overlay option too.
Get your London roof repaired
Get an instant estimate online, then we confirm the price after a quick look at your roof.