Rear extension flat roofs on edwardian semis — grp upgrade most appropriate given the age of original felt. We carry out flat roof surveys, GRP fibreglass and EPDM rubber installations across Pennsylvania with correct drainage specification for Devon’s above-average rainfall. Free survey. Call 01392 759 295.
Flat roof work in Pennsylvania covers two distinct scenarios: replacement of felt that has reached end of service life on post-war rear additions, and first-time flat roofing on new extension work. In both cases, the specification decision between GRP fibreglass and EPDM rubber depends on the roof shape, size and deck condition.
Elevated victorian and edwardian suburb with good-size properties and predominantly welsh slate. Elevated north exeter position with above-average wind loading on exposed north-west faces. Drainage specification for flat roofs in Pennsylvania must account for Devon’s above-average rainfall: fall toward the outlet must be maintained at minimum 1:80, and the outlet must be sized for the catchment area. On Pennsylvania’s victorian and edwardian stock, flat roofs that were originally installed with inadequate fall are commonly found during re-roofing surveys.
GRP fibreglass is our first recommendation for most Pennsylvania flat roofs under 50m². Its seamless rigid surface provides no joints for Devon’s rainfall to exploit and is easy to inspect for condition. EPDM rubber is recommended for irregular roof shapes and for larger areas where thermal movement is significant. We advise on the correct system at the survey stage for every Pennsylvania job.
Free survey — no call-out fee, no obligation.
📞 Call 01392 759 295“GRP on our rear extension in Pennsylvania. Deck assessed first, drain correctly specified. Excellent result.”
“Old felt replaced with EPDM on irregular conservatory roof. Correct choice for the shape. Professional installation.”
“They found the deck had been compromised by the old felt failure. Repair included in the quote. No surprises.”
From £800 for a small garage to £6,000+ for a large extension. GRP and EPDM pricing provided. Free survey. Call 01392 759 295.
GRP for standard extension sizes under 50m² with straightforward access. EPDM for complex shapes and larger areas. We advise at survey.
GRP and EPDM: 25–30 years. Felt: 10–15 years. The cost-per-year difference justifies GRP or EPDM for any new flat roof installation.
Always — deck condition is surveyed before every flat roof installation. Compromised decks are repaired before the new covering is applied.
10-year workmanship guarantee on all flat roofing. Call 01392 759 295.
Minimum 1:80 fall toward the outlet, correctly sized outlet for the catchment area. Devon’s above-average rainfall requires proper drainage specification.
Yes, if the deck is sound. We assess deck condition at survey and include repair as a scope item where required.
No call-out fee. No obligation. Local Exeter roofers who turn up when they say they will.
01392 759 295