GRP fibreglass and EPDM flat roofing specialists in Calne — extensions, garages and outbuildings. Correct drainage, proper upstand detailing, 25-year material guarantee. Free no-obligation quotes.
All flat roofing work across Calne 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 →Calne's elevated chalk ridge position creates more UV and thermal cycling than valley towns — felt and lead age faster on exposed south-facing slopes. For flat roofing work in Calne, this means specification choices that reflect the actual conditions rather than generic Wiltshire averages.
1980s–90s estate housing on Studley and Quemerford drives the majority of maintenance calls. We are 6 miles east from Calne — 12 minutes — with no travel surcharge and same local knowledge that applies to every property type in this area.
Free quotes. No call-out fees. 12 minutes from Chippenham.
Flat roofing in Calne is dominated by rear extension work on the 1980s and 1990s estate housing in Studley and Quemerford. These properties were built with felt flat roofs on single-storey rear extensions — now 30–40 years old and well past their design life. We replace these with GRP fibreglass as standard: same cost bracket as re-felting, 25-year material guarantee, and genuinely watertight rather than temporarily patched.
Calne's elevated position means flat roofs on exposed elevations are subject to more UV and thermal cycling than lower Avon Valley towns. This accelerates felt degradation and increases the frequency of blistering and joint failure. GRP is particularly well-suited to Calne's exposure profile — it's UV stable, seamless once cured, and doesn't suffer the freeze-thaw cracking that affects felt on exposed north Wiltshire properties.
"Extension flat roof replaced in GRP after 30 years of felt patching. Deck inspected, boards sound, drainage corrected. Dry from the first day. Should have done it years ago."
"GRP replacement on 1985 extension — felt had been leaking for two winters. Done in a day, no mess, 25-year guarantee. Excellent."
"Large L-shaped extension flat roof in EPDM. Complex geometry handled correctly. Better than the felt it replaced by a significant margin."
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.
Yes — GRP is UV stable and handles Calne's thermal cycling better than felt. It's seamless once cured and doesn't suffer the joint failures that affect felt on exposed north Wiltshire properties.
Felt flat roofs have a 15–25 year design life. Repeated patching extends the surface life but doesn't address underlying membrane failure. GRP replacement is the permanent solution.
GRP installation requires temperatures above 5°C for correct curing. We schedule GRP installations around weather windows and won't apply GRP in conditions that would compromise the cure. EPDM can be installed in colder conditions.
Yes — garages and outbuildings are a significant part of our flat roofing workload. Same specification and guarantee as domestic extensions.
A standard single-storey extension flat roof takes one day to replace. Larger or more complex roofs may take two days. We give a realistic timeline in every quote.
6 miles east — 12 minutes. No travel surcharge. Free surveys and quotes throughout the Calne area.
No call-out fees. No obligation. Local roofer covering all of Wiltshire.
01249 247 076