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Roofer laying a rubber membrane on a flat roof extension

Flat Roofing in Cardiff

Flat roofing is a specialism, not a sideline — we route your request to roofers who install EPDM and GRP week in, week out. Covering CF10, CF14, CF23, CF64, CF24, CF5.
Published by Find Trusted Roofers · Last updated
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We connect homeowners across Cardiff with local roofers who know the area's Welsh slate and clay tile roofs.

Flat Roofing in Cardiff

Flat roofs fail differently from pitched ones, with ponding water and cracked corners as the usual signs. We connect homeowners in Cardiff with a specialist who works on EPDM, GRP and felt roofs every week. Modern materials last much longer than old felt, since EPDM and GRP resist standing water for decades.

For pitched roof problems on the same property, see our roof repairs page. If a leak needs sorting today, our emergency roofer page can put you in touch fast. Read our flat roofing guide for the difference between EPDM, GRP and felt, since the right choice depends on the roof itself. One quick form gets things moving.

Flat roofing in Cardiff covers EPDM, GRP and felt, from a £1,000–£2,000 garage roof to a £1,800–£3,500 extension roof, fitted by a local specialist.

Roofing in Cardiff — what local roofers know

Many roofs around Pontcanna and Cathays in Cardiff use Welsh slate and clay tile. Storm Eunice brought strong winds to the region, and loosened ridge tiles are still a common call-out. Many extensions and garages here have a flat roof, since a pitched roof rarely suits a small structure. Not every flat roof material suits every job, since size and use both matter. For more background, see our EPDM vs GRP vs felt comparison.

  • Traditional Welsh slate roofs need like-for-like repair rather than a tile swap.
  • Storm Eunice and Storm Darragh both brought wind damage that loosened tiles, ridges and flashings across South Wales.
  • Much of Cardiff's older housing still has original pitched roofs, so slipped tiles and worn valleys are common.

How it works in Cardiff

  1. 1 Tell us once. Describe the job and your postcode. It takes under two minutes and there's no phone call to sit through.
  2. 2 We match you locally. We pass your request to a roofer in our network who covers CF10/CF14 and works on your roof type.
  3. 3 You get a proper quote. The roofer surveys the roof and quotes in writing before any work begins. You choose whether to go ahead.

Flat Roofing costs in Cardiff

Every job is quoted after a proper look at the roof. Access, materials and condition all change the price, so beware of anyone quoting a fixed figure over the phone. See the Flat Roofing FAQs below for typical prices, or read our roofing costs guide for full UK price ranges. Request quotes to get real numbers for your roof in Cardiff.

Looking for flat roofing outside Cardiff? Read about flat roofing nationwide, or see all roofing services in Cardiff.

Roofing in Cardiff

Local facts a good roofer factors in before quoting — population, postcodes, roof stock and weather exposure. Every quote should reflect the property itself. These facts help our roofers get it right first time.

Population
362,756
Postcode districts
CF10CF14CF23CF64CF24CF5
Council
Cardiff
Dominant roof types
Welsh slateclay tile
Weather exposure
ExposureModerate
CoastalNo
Common local roofing issues
Traditional Welsh slate roofs need like-for-like repair rather than a tile swap.Storm Eunice and Storm Darragh both brought wind damage that loosened tiles, ridges and flashings across South Wales.Much of Cardiff's older housing still has original pitched roofs, so slipped tiles and worn valleys are common.

Flat Roofing in Cardiff — FAQs

How much does a new flat roof cost in Cardiff?

As a guide, replacing a single garage flat roof runs about £1,000–£2,000 in EPDM. Extension roofs typically cost £1,800–£3,500, since size and edge detailing both add to the price.

Why does my flat roof in Cardiff keep leaking?

Ponding water from poor falls, cracked covering and failed edge flashings are the usual causes. A specialist should diagnose the actual fault first, since a patch over the wrong problem will only fail again.

Which is better: EPDM rubber, GRP fibreglass or felt?

EPDM is flexible, quick to install and excellent on garages and extensions. GRP gives a seamless, hard-wearing finish ideal for balconies and walk-on roofs. Modern torch-on felt is still a legitimate budget option. The right choice depends on the roof's size, traffic and detailing, so a specialist will recommend based on the actual deck.

How much does a new flat roof cost?

As a guide, replacing a single garage flat roof runs about £1,000–£2,000 in EPDM, while a typical extension roof runs £1,800–£3,500, depending on size and edge detailing. GRP costs a little more than EPDM; felt a little less.

How long does a flat roof last?

Old-style felt: 10–15 years. Modern high-performance felt: up to 20. EPDM rubber and GRP fibreglass: 25–30+ years when properly installed on a sound deck with correct falls.

Why does my flat roof keep leaking?

The usual suspects are ponding water from inadequate falls, and cracked or blistered covering. Failed upstands and flashings at walls and skylights, or a rotten deck flexing underneath, are also common. Since a repair that ignores the underlying cause will fail again, insist on a diagnosis, not just a patch.

Flat Roofing near Cardiff

We connect homeowners with local roofers across the towns around Cardiff. Pick a town to see local roofing coverage.

Our Cardiff service area

We connect homeowners across Cardiff with local roofers who know the area's Welsh slate and clay tile roofs. We share work by postcode. As a result, our roofers also cover the CF10, CF14, CF23, CF64, CF24, CF5 postcode districts. Nearby coverage includes Bristol, Cheltenham, Swindon, Oxford, Southampton.

Get flat roofing quotes in Cardiff

We connect homeowners across Cardiff with local roofers who know the area's Welsh slate and clay tile roofs.

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