Flat Roof Repairs
Flat Roof Repairs in London
Most flat roof leaks can be repaired without replacing the whole roof, if the repair is done properly and the underlying cause is fixed. We repair felt, GRP, EPDM and other flat roofs.
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- Fully insured, 20+ years in London
- Free written quotes, no obligation

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20+ years trading
Experienced London roofers
Flat Roof Repairs across London
Flat roofs fail at their weak points: seams, edges, upstands, penetrations and any place water pools. A bucket of bitumen paint on the visible crack is not a repair and often hides the real problem. We open up and dry out the affected area, fix the cause and rebuild the waterproofing properly.
We repair flat roofs on extensions, garages, porches, bay windows, dormers and commercial buildings across London. If your roof is leaking right now, call us for an emergency call-out and see our emergency roof repairs page.

When a flat roof needs repair
- Water stains or drips from the ceiling below the flat roof
- Visible splits, cracks, holes or lifted laps in the membrane
- Bubbles or blisters that may trap moisture
- Pooling water that does not clear within a couple of days
- Failed sealant at edges, upstands, vents and roof lights
Not sure what is wrong?
Send us a photo or describe the problem and we will tell you honestly what we think it is and what it needs. A free written quote follows any inspection.

How we repair flat roofs
For felt, we cut out damaged areas, dry the deck and fit new reinforced layers with proper laps. For GRP, we grind back and re-laminate the damaged area with a new topcoat. For EPDM, we fit patch or replacement membrane with the correct adhesives and tapes. Failed flashings and edge trims are replaced and outlets cleared or renewed.
We also look for the reason the roof failed: poor falls, trapped water, blocked outlets or structural movement. If the repair would only be a short-term fix, we say so and give you the alternatives.
How it works
Find the fault
We inspect the surface, edges and details and check inside for the water path.
Agree the repair
You get a written quote for a repair that will last.
Repair
We dry out and rebuild the waterproofing with the right materials.
Test and tidy
We check falls and outlets and leave the roof clear.
Roof leaking now?
We offer emergency call-outs across all London boroughs. Call us and we will tell you what to do straight away and how soon we can attend.
Repair, recoat or replace
If a roof is mostly sound, a repair or waterproof coating is cost-effective. If it is old, ponding in multiple places or failing along the seams, a new roof is usually better value over time. We tell you honestly which side of the line your roof is on, and see flat roof replacement if it is time for a new one.
What affects the cost?
A flat roof repair is priced on the size of the area, the roof system, access and the cause of the problem. Small repairs are often completed in a single visit. We provide a free written quote after inspection.
Flat Roof Repairs in your part of London
We carry out flat roof repairs across every London borough and the areas around it. Choose your borough to see how we work locally, or call us on 020 7946 0958 if yours is not listed.
Related roofing services

Flat Roof Replacement
Stripped back and rebuilt: new decks, falls, insulation and a durable GRP, EPDM or felt finish.

Roof Waterproofing & Sealing
Liquid membranes, coatings and sealants that stop leaks and extend the life of an ageing roof.

Leaking Roof Repairs
We trace the leak to its source and seal it properly, so the stain stays gone.

Emergency Roof Repairs
Roof leaking now or storm damage? Call for an emergency call-out anywhere in London.
Flat Roof Repairs FAQs
Can you repair a flat roof leak without replacing the roof?
Yes, in many cases. Targeted repairs fix splits, failed seams and detail leaks. If the roof is old and failing everywhere, replacement is better value.
Why is my flat roof leaking at the edges?
Edges and upstands are the most common weak points. Trims can lift and sealant can fail, letting water behind the membrane.
How long will a flat roof repair last?
A proper repair on a sound roof can last many years. A temporary patch on a failing roof will not, which is why we explain the condition of the whole roof.
Do you repair GRP, EPDM and felt?
Yes, all three, and we match the repair method to the existing system.
Free written quotes
Need flat roof repairs in London?
Call us or send your details for a free written quote.
Free quotes
Get your free written quote
Tell us about your roof and we will come back to you with advice and a clear written quote. No pressure and no obligation.
- Free written quotes, no obligation
- TrustMark registered and fully insured
- Emergency call-outs across London
- Prefer to talk? Call 020 7946 0958
Call us on 020 7946 0958 or email [email protected].