Flat Roof Replacement
Flat Roof Replacement in London
When a flat roof has reached the end of its life, a proper replacement is cheaper in the long run than repeated repairs. We strip back, fix the structure and fit a new roof built to last.
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- Fully insured, 20+ years in London
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Flat Roof Replacement across London
A good flat roof replacement is more than a new covering. We check the deck for rot, correct the falls so water drains, add insulation where possible and install new drainage and edge details before the waterproof layer goes on.
We replace flat roofs on extensions, garages, dormers and commercial buildings across London, using GRP, EPDM or high-performance felt depending on the roof and your priorities.
Signs your flat roof needs replacing
- Repeated leaks and repairs in different places
- Widespread cracking, blistering or splitting of the surface
- Soft, spongy or sagging deck when walked on
- Standing water that never clears and stained ceilings below
- A roof that is more than 15 to 20 years old, depending on the system
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.
What replacement involves
We strip the old covering and inspect the deck. Damaged boards are replaced and falls are corrected with tapered insulation or firring strips. We install new insulation boards, a vapour control layer where needed, the new waterproofing system, drip trims, upstands and new outlets. Roof lights, fascias and guttering can be replaced at the same time.
We discuss insulation requirements with you at the quote stage. Where we replace the entire roof covering of a heated space, building regulations may require the insulation to be brought up to standard, and we plan for that.
How it works
Survey
We measure, test falls and discuss options and budget.
Quote
A written quote covers deck, insulation, system and details.
Strip and repair
Old roof removed, deck repaired and falls corrected.
Waterproof and finish
New system laid, edges trimmed and the roof checked.
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.
Choosing the new system
We install GRP fibreglass, EPDM rubber and felt roofs. GRP is popular for domestic roofs because it is seamless and tough. EPDM suits large areas. Felt is an economical choice with a proven track record. We will help you pick.
What affects the cost?
Flat roof replacement cost depends on the area, deck condition, the insulation specification, the system and access. We provide a clear written quote after a free survey.
Flat Roof Replacement in your part of London
We carry out flat roof replacement 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 Roofing
New flat roofs, repairs and replacements in GRP, EPDM and felt for extensions, garages and dormers.
GRP Fibreglass Roofing
Seamless fibreglass flat roofs for extensions, dormers and balconies, tough and long-lasting.
EPDM Rubber Roofing
Durable, flexible single-sheet rubber roofing for extensions, garages and larger flat roofs.
Roof Insulation
Warm roof and cold roof insulation fitted with re-roofs and repairs to cut heat loss and condensation.
Flat Roof Replacement FAQs
How long does flat roof replacement take?
Most domestic flat roofs are replaced in one to three days depending on size, deck condition and weather. We confirm timing in the quote.
Can I walk on my new flat roof?
GRP and EPDM roofs can take light foot traffic for maintenance. If you want a terrace or regular use, tell us and we specify a suitable finish.
Can you replace a flat roof in winter?
Yes, with care. We choose systems and times that suit the weather. Some systems are better in cold or damp conditions than others.
Will the new roof be insulated?
We recommend it and will discuss options. It improves comfort and efficiency and may be required for compliance.
Free written quotes
Need flat roof replacement 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].