GRP fibreglass and EPDM flat roofing specialists in Bradford-on-Avon — extensions, garages and outbuildings. Correct drainage, proper upstand detailing, 25-year material guarantee. Free no-obligation quotes.
Tell us the job in 30 seconds. No pushy sales, no call-out fee.
📞 Call Now: 01249 247 076In short: Flat Roofing in Bradford-on-Avon: Flat roofing runs £900–£2,500 for a typical extension. We cover Bradford-on-Avon and the surrounding BA15 area with free quotes, no call-out fee, and a 10-year workmanship guarantee. Failing felt flat roofs are best replaced in GRP or EPDM rather than patched.
All flat roofing work across Bradford-on-Avon and surrounding Wiltshire — same local team, same standards, same guarantee as our Chippenham base.
Seamless, UV stable, 25-year material guarantee. Our standard recommendation for domestic extensions. Installed in one day on most standard roofs.
Get a quote →Better suited to large or complex roof shapes with significant thermal movement. 20-year material guarantee. Excellent performance on wide-span outbuildings.
Get a quote →Budget flat roofing option. Shorter lifespan than GRP or EPDM but appropriate where cost is the primary constraint. We advise honestly on expected service life.
Get a quote →Included on every flat roof replacement. We inspect boards before laying the new membrane — rotten or damaged deck is replaced as part of the same visit.
Get a quote →Ponding flat roofs have a fall problem, not just a membrane problem. We correct drainage falls as standard on every flat roof replacement — not just relay over the existing profile.
Get a quote →Sudden flat roof failure causing active water ingress. Same-day temporary seal available. Permanent GRP replacement scheduled within the week.
Get a quote →The Avon Valley's consistently high moisture makes this the most demanding environment in our coverage for lead and felt longevity — we specify code 5 lead on exposed stacks as standard here. For flat roofing work in Bradford On Avon, this means specification choices that reflect the actual conditions rather than generic Wiltshire averages.
Extensive Bath stone conservation area with terraced hillsides — one of the highest concentrations of listed buildings in Wiltshire. We are 10 miles south from Bradford On Avon — 20 minutes — with no travel surcharge and same local knowledge that applies to every property type in this area.
Free quotes. No call-out fees. 20 minutes from Chippenham.
Failing felt flat roofs are best replaced in GRP or EPDM rather than patched in Bradford-on-Avon. Bradford-on-Avon is a steep Bath-stone town tumbling down to the river — terraced weavers' cottages, stone-slate and clay roofs, and one of Wiltshire's densest listed-building cores. On this kind of stock, the common problems are conservation-grade stone-slate work, lime repointing on stone stacks, and moss on the shaded riverside terraces — and knowing which you are dealing with is the difference between a lasting fix and money wasted.
Flat roofing in Bradford-on-Avon is predominantly on rear extensions of the town's period properties and on the modern fringe housing. The Avon Valley's high moisture environment accelerates felt deterioration significantly — we routinely replace Bradford-on-Avon felt roofs that are only 15–20 years old but have failed due to the valley humidity. GRP is the only sensible specification here for long-term performance.
Conservation area and listed building requirements in Bradford-on-Avon may apply to visible flat roofs. GRP is generally acceptable on rear non-visible surfaces. For visible flat roofs on listed buildings, a lead specification may be required. We advise on planning status and specification during the free survey.
We remove the old covering and inspect the deck for rot — the step most quotes skip.
We check and correct drainage falls so water runs off cleanly rather than ponding.
A fixed price covering deck repairs, membrane and trims, agreed before work starts.
GRP is laid wet and cures seamless; EPDM is bonded as one sheet. Trims and upstands dressed in.
The finished roof carries a 25-year material guarantee (GRP) plus our workmanship cover.
| Job | Typical duration |
|---|---|
| Small extension (GRP, up to 15m²) | 1–2 days |
| Standard extension (GRP) | 2–3 days |
| Garage roof (EPDM) | 1 day |
| Deck / board replacement | +half to full day |
| Larger / commercial flat roof | per assessment |
GRP needs dry conditions to cure; we won't lay fibreglass in rain, so winter jobs are weather-scheduled.
Bradford-on-Avon's steep, terraced stone streets have severe access constraints and a major conservation area demanding natural materials and lime mortar. Pavement scaffold and skip permits in Bradford-on-Avon go through Wiltshire Council; on tight streets like Silver Street, Market Street, Newtown we allow extra time for setup and access.
Flat roofing runs £900–£2,500 for a typical extension. Bradford-on-Avon pricing tracks Chippenham, adjusted for access on Bradford-on-Avon's stock.
| Job | Typical range | Notes |
|---|---|---|
| GRP small extension (up to 15m²) | £1,200–£1,800 | 25-year guarantee |
| GRP standard extension (15–25m²) | £1,800–£2,500 | Seamless fibreglass |
| EPDM standard extension | £900–£1,800 | Single bonded sheet |
| Garage roof (GRP or EPDM) | £800–£1,600 | Per garage |
| Deck / board replacement | £150–£400 | Where timber has gone soft |
| Larger / commercial flat roof | from £45/m² | Single-ply or GRP |
No deposit on jobs under £500. On larger flat roofs, no payment before materials are on site. VAT included. Payment on completion once tested and dry.
Covering BA15 and surrounding postcodes.
GRP carries a 25-year material guarantee and EPDM 20 years; our workmanship cover sits on top, and the deck and falls — which decide longevity — are guaranteed too.
A day or two of work over a single room, minimal internal disruption; we clear the old felt and all waste on completion. You do not need to stay home for external work.
EPDM can go on year-round; GRP needs a dry weather window. We temporary-weatherproof if rain interrupts a job. Bradford-on-Avon's steep valley sides and riverside position combine shade, humidity and wind exposure on the upper slopes.
"GRP flat roof replacement on extension — done properly, first time. Dry for two winters. Free quote was accurate and no hidden additions."
"Extension flat roof had been leaking for years. Previous roofer patched it twice. These stripped and replaced with GRP. Finally resolved."
"Garage flat roof replaced in EPDM — large complex shape, handled correctly. Clean job, good price."
GRP fibreglass up to 20m²: £1,200–£2,500. EPDM up to 20m²: £900–£1,800. Includes strip, deck inspection, drainage correction and installation. Free written quote — call 01249 247 076.
Bradford-on-Avon is 10 miles south — 20 minutes. No travel surcharge. Free surveys and quotes.
GRP fibreglass carries a 25-year material guarantee and significantly outlasts felt. It's seamless once cured, handles thermal cycling well, and doesn't suffer the joint failures common on felt. We recommend GRP over re-felting in almost all cases.
A standard single-storey extension flat roof up to 25m² is typically completed in one day. Larger or more complex roofs may take two days. We give an accurate timeline in every quote.
Yes — garages, outbuildings and garden buildings are a regular part of our flat roofing work in Bradford-on-Avon. Same specification and 25-year guarantee as domestic extensions.
If the roof is more than 20 years old and showing active failure, replacement is almost always more cost-effective than repair. We survey and advise honestly — we won't recommend replacement if targeted repair genuinely meets the situation.
GRP fibreglass carries a 25-year material manufacturer's guarantee plus our own 10-year workmanship guarantee. EPDM carries a 20-year material guarantee. Both are provided in writing on completion.
No call-out fees. No obligation. Local roofer covering all of Wiltshire.
01249 247 076Last updated: August 2026