Roofers for London and surrounding areasOpen 7 days, 9am to 5pm · 24 hour call-out
Flat roofs · London and surrounding areas

Flat roofing in London

Flat roofing in London and the surrounding areas: extensions, garages, dormers and bays stripped and renewed in EPDM rubber, fibreglass or felt. Free roof inspection, written quote, workmanship guaranteed. Tap to start.

Finished grey mineral felt flat roof with a new outlet
FinishedFinished felt flat roof
  • Free roof inspection
  • Written quote, no obligation
  • Workmanship guaranteed
  • Fully insured and qualified
  • Domestic and commercial
  • 24 hour call-out

Flat roofs fail at the edges first

Most flat roof leaks start at the edges, outlets and upstands, not in the middle. Trims lift, felt cracks at the wall, an outlet blocks and water sits until it finds a way in. Ponding water and blisters are the warning signs.

We tell you whether a repair will hold or whether the roof needs stripping. When it needs replacing we take it back to the deck, replace any rotten boards, add insulation where it makes sense, and lay a new system with new trims, upstands and outlets.

One customer in SE6 had her flat roof repaired at short notice. In her words: left everything clean and tidy, very pleasant and hard working team.

Signs you need this work

  • Water ponding after rain
  • Blisters or cracks in the felt
  • Damp on the ceiling of an extension or bay
  • Edge trims lifting or gaps at the wall
  • A soft or spongy deck underfoot
  • Moss and debris round the outlet

What your quote covers

  • A free roof inspection
  • Old covering stripped and the deck checked
  • Rotten boards replaced, insulation added where suitable
  • New trims, upstands and outlets
  • Your choice of rubber, fibreglass, felt or single ply
  • A written quote, workmanship guaranteed
Free roof inspection. Written quote. No obligation.
New slate roof slopes around two roof lanterns behind a row of chimney pots
FinishedSlate roof round two roof lanterns

What our customers say

★★★★★

Professional, friendly and reliable

Fantastic service from Masterfix Roofing & Guttering Ltd! The team was professional, friendly, and reliable. They did an excellent job, showed great attention to detail, and ensured everything was completed to a high standard. Great communication and customer service throughout. Highly recommended for anyone looking for quality roofing and guttering services!
★★★★★

An amazing re-roof

Thanks to master fix roofing and guttering Ltd for the amazing work they did on my reroof will definitely use this company again in the future
10/10

Flat roof repaired at short notice

Happy with our experience with masterfix roofing and guttering had our flat roof repaired in short notice left everything clean and tidy very pleasant and hard working team
Verified Checkatrade reviewer · SE6CheckatradeSeptember 2026
10/10

Three quotes, chose Masterfix

Materfix roofing and guttering Ltd came out and inspected my roof as I was having a leak in my bedroom ceilings. They gave me a quote and I also got more quotes from 2 other companies which were around the same price. I decided to go with masterfix. They came out the next week and did a very good job. Very well manoured bunch of lads and would highly recommend them to anybody. Thanks again
Verified Checkatrade reviewer · CM18CheckatradeSeptember 2026

Which flat roof system?

EPDM rubber is one seamless sheet with no joints to fail. Fibreglass (GRP) gives a hard, walkable finish that suits balconies and dormers. Torch-on and mineral felt are cost-effective for garages and outbuildings. We also install single ply membranes, liquid plastic and hot melt systems, polycarbonate roofs and green roofs.

You get a straight recommendation for your roof, not the most expensive option on the list. For pitched roofs see new roofs and roof repairs.

Flat roofs: more from our jobs

Our own photos. Finished work first, then jobs under way.

How the job runs

  1. Tap a tile or call

    Tell us what is wrong and where. A photo from the ground helps.

  2. Free roof inspection

    Michael comes out and looks at the roof properly. Free, no obligation.

  3. Written quote

    What we found, what it needs and one fixed price, in writing.

  4. Job done, site cleared

    The work is done to the agreed plan, the site is left clean and tidy, and the workmanship is guaranteed.

Everything in writing before you say yes

The roofing horror stories all start the same way: a quote that was never written down. Every Masterfix quote is written, itemised and free, and there is no obligation to go ahead.

What you will not get from us

  • A price shouted up from the pavement
  • A patch over a leak nobody traced
  • A cheap quote that grows once the scaffold is up
  • Rubble left in your garden
Written quotationMasterfix Roofing & Guttering Ltd
  1. 01Free roof inspectionUp on the roof, not a guess from the pavement
  2. 02What we foundPhotos and a plain explanation of the fault
  3. 03The work, itemisedMaterials, scaffold and waste, all listed
  4. 04One fixed priceIn writing before anything starts
  5. 05Workmanship guaranteedOur work stands behind the price
No obligationFair, competitive pricing

Straight answers before you book

How much does a flat roof cost in London?
It depends on the size, the system and the state of the deck underneath. The inspection is free and you get a written quote before anything starts.
Rubber, fibreglass or felt: which is best?
Each suits a different roof. We look at yours, tell you which we would fit and why, and quote for it.
Can you repair my flat roof instead of replacing it?
Often, yes. If the deck is sound and the fault is local, a repair is what you are quoted for.
Do you work on commercial flat roofs?
Yes. We work for domestic and commercial customers.

Get your free flat roofs quote

Send the form or call. Michael rings you back, inspects the roof for free and puts the price in writing.

Fantastic service from Masterfix Roofing & Guttering Ltd! The team was professional, friendly, and reliable. They did an excellent job, showed great attention to detail, and ensured everything was completed to a high standard. Great communication and customer service throughout. Highly recommended for anyone looking for quality roofing and guttering services!
JoddyGoogle review · ★★★★★

Tell us what your roof needs

Michael calls you back to book your free roof inspection. No obligation.

We use your details only to reply to this enquiry. How we use your details.

Free roof inspection. Written quote. No obligation.

Step 1 of 5

What needs fixing?
Call nowFree quote