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Finished EPDM rubber flat roof installed by WeatherTech Roofing

Flat & rubber roofs

Typical jobs from£1,500

Firestone EPDM rubber roofs on garages, extensions, dormers — 20-year manufacturer guarantee.

Felt roofs reach end-of-life. The seams split, water gets in, the deck rots. The modern replacement is a single-sheet EPDM rubber roof — one piece of rubber laid over the whole surface, with no central seams to fail. Firestone is the dominant brand in the UK; we're approved installers.

Typical applications: flat-roofed garages, kitchen extension roofs, dormer roofs, porches, bay window roofs. We strip the failing felt, check and replace any rotten deck timber, then bond the rubber sheet directly to the deck. Edge trims and outlets are in-keeping with the property — no DIY-ugly silver flashing edges.

20-year manufacturer warranty on the rubber itself, our 10-year workmanship guarantee on the install. Realistic lifespan is 30-50 years.

What's included

  • One-piece sheet — fewer seams, fewer leaks
  • 20-year Firestone manufacturer guarantee
  • Suitable for re-cover or full strip-and-replace
  • Deck timber repairs included if needed
  • Compatible with skylights, rooflights and solar fixings
  • GRP fibreglass option available where preferred

Ready to talk about your flat & rubber roofs?

Free quote within 48 hours of a visit. No pressure.

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FAQs

Common questions

How long does a garage roof take?
A typical single garage is 1 day, double garage 1-2 days. Larger extensions or dormers are 2-3 days depending on access and any deck repairs.
Can you fit a rubber roof in winter?
Yes — EPDM bonds reliably down to about 5°C. We monitor the forecast and won't lay rubber in freezing rain, but we work through the winter in normal conditions.
Do I need building regs for a flat roof replacement?
If you're replacing more than 25% of the existing roof, current Building Regulations require improved insulation underneath. We'll factor that into the quote — usually adds a day to the build.
Is rubber better than felt?
By a wide margin. Felt is cheaper upfront (~£1,500 vs £2,500 for a typical garage) but starts deteriorating within 5-10 years. A Firestone EPDM roof lasts 30+. Cost per year, it's significantly cheaper.

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