Flat Roofing in Swindon
Local roofers for repairs, new roofs & flat roofing. Free surveys, fixed written quotes, tidy workmanship.
Swindon Roofing Company installs and repairs flat roofs across Swindon — extensions, garages, dormers, porches and bay tops. Flat roofs went from the industry's embarrassment to genuinely excellent in a generation: modern EPDM rubber and GRP fibreglass systems carry 20–30 year lifespans that the old three-layer felt roofs never managed.
If your flat roof is ponding, bubbling or past its warranty, the honest question is rarely 'can it be patched' but 'which modern system replaces it' — and the price difference is smaller than most people expect.
Flat roof systems we install
EPDM rubber
Single-membrane rubber, no joins on most domestic roofs — the best value-to-lifespan system for extensions and garages.
GRP fibreglass
Seamless wet-laid fibreglass — the premium finish for roofs with foot traffic, complex shapes or balconies.
High-performance felt
Modern torch-on systems still earn their place on budget-driven jobs and repairs to existing felt roofs.
Insulated warm-roof upgrades
Replacing a flat roof is the moment to add rigid insulation above deck — warmer room below, condensation risk gone, regs satisfied.
Flat roof costs in Swindon
| Job | Typical price | Lifespan |
|---|---|---|
| Garage roof in EPDM | £1,400 – £2,600 | 20–30 years |
| Extension roof in EPDM (warm roof) | £2,500 – £4,800 | 20–30 years |
| Extension roof in GRP | £3,000 – £5,500 | 25–30 years |
| Felt repair / overlay | £450 – £1,500 | 5–10 years |
Guide prices 2026 including deck checks and edge trims. Rotten decking found on strip-up is priced per board, agreed before replacement.
Why flat roofs fail — and how ours don't
Flat roofs fail at details: ponding from inadequate falls, splits at upstands and trims, and condensation rotting the deck from below on uninsulated 'cold roofs'. Our replacements correct falls with firring, detail upstands to the membrane manufacturer's spec, and default to warm-roof build-ups so the structure stays dry from both sides. A flat roof done this way is a fit-and-forget item, which is the entire point.
Frequently asked questions
Ready for a free, no-obligation quote?
Call 01793 569397