Red brick semi-detached house with a tiled roof, two chimneys and a glass extension, seen from the back garden

Flat Roof Repair in Reading

Leaking extension, garage or dormer roof? Compare quotes from up to 3 vetted roofers in Reading for a flat roof repair or replacement.

Job type: Roofers
  • Reviews from real, invoiced jobs
  • Vetted local trades
  • Free for homeowners

Flat roof problems we can help with

Leaks and damp

Damp patches or drips on the ceiling below, water getting in around rooflights, and leaks at edges and walls.

Wear and damage

Blistering, cracking or split felt, ponding water that won't drain, and moss or plants growing on the roof.

Replacement

New felt, EPDM rubber or GRP fibreglass roofs, with better insulation and new edge trims.

Flat roofs are everywhere in Reading: on rear extensions behind Victorian terraces, on garages, porches and dormers, and on 1960s and 1970s houses. They're cheaper to build than pitched roofs, but they wear faster. Older felt roofs often last 10 to 20 years, while EPDM rubber and GRP fibreglass roofs usually last longer if they're well installed.

Many leaks come from the edges rather than the middle of the roof: the flashing where the roof meets a wall, the trims at the edge, or the seal around a rooflight. These can often be repaired. Ponding, where water sits on the roof for days after rain, is a sign the roof doesn't fall properly towards its gutter, and it shortens the life of any covering. Blistering, cracking or split felt across a large area usually means the covering is at the end of its life, and patching will only buy time.

If the roof needs replacing, ask about the material. Felt is usually cheapest. EPDM rubber is a single sheet with few joints. GRP fibreglass gives a hard, walkable finish, which is useful on a dormer or balcony. If the roof is over a heated room, such as an extension or dormer, replacing most of it normally means the insulation has to be brought up to current building regulations standards. Your roofer should explain how that will be done and whether building control needs to be told. Garage roofs over unheated space don't usually need this.

When you post your job, include photos of the roof and of any damp inside, and say how big the roof is and how you get to it. Ask for a written quote that names the material, the guarantee, and whether rotten decking, edge trims and gutters are included. Reviews on Trade Pilot come from real, invoiced jobs, so you can see how other homeowners rated a roofer's work.

Typical prices

JobTypical UK rangeNotes
Patch repair£150–£400Small areas of split felt or a single leak
Reseal flashings or edge trims£150–£350A common cause of leaks
Full replacement, per m²£60–£120Felt is cheapest; EPDM rubber and GRP cost more
Single garage roof, full replacement£900–£2,000Depends on the material and condition of the deck
Replace rotten deckingVariesOnly known once the old covering is lifted

Typical UK ranges; your quotes depend on the job and access.

How it works

  1. 1

    Tell us about the job

    Check your Reading postcode and describe what you need. Photos help.

  2. 2

    Get up to 3 quotes

    Up to 3 vetted local trades who cover your part of Reading can quote.

  3. 3

    Compare and choose

    Read reviews from their real, invoiced jobs, compare the quotes, and choose who to invite round. Or choose no one.

How Trade Pilot helps you hire in Reading

Vetted local trades

We check every roofer before they can quote. Always ask for proof of insurance before work starts.

Reviews from real jobs

Reviews on Trade Pilot are tied to invoiced jobs, so you’re reading about work that was actually done and paid for.

Free, with no obligation

Posting a job and getting up to 3 quotes is free for homeowners. You choose who to invite round, or no one at all.

Frequently Asked Questions

A patch repair usually costs £150 to £400. Full replacement is typically £60 to £120 per square metre, depending on the material, so a single garage roof often comes to £900 to £2,000.

A single leak or worn flashing can usually be repaired. If the covering is blistered, cracked or split across a large area, or water ponds on it, replacement is usually better value.

Felt is usually cheapest. EPDM is a single rubber sheet with few joints. GRP gives a hard, walkable finish. The best choice depends on the roof's size, shape, use and budget.

Older felt roofs often last 10 to 20 years. EPDM and GRP roofs usually last longer if they're well installed and maintained.

Ponding usually means the roof doesn't fall properly towards its gutter, or the deck has sagged. It shortens the life of the covering, so ask your roofer about correcting the falls if you replace it.

Replacing most of a flat roof over a heated room usually means improving the insulation to meet building regulations. Your roofer should explain how that's handled. Garage roofs over unheated space don't usually need this.

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