Expert flat roofing across Marlborough and surrounding areas. Marlborough is 12 miles from our Swindon base. Free quotes, 10-year guarantee, no call-out fees.
Marlborough is 12 miles from our Swindon base. The Kennet valley humidity trap at 140m creates specific conditions that affect flat roofing work here. The Barton Park estates represent the bulk of our post-war work, while the listed High Street buildings require specialist knowledge of traditional materials and techniques. We carry the right materials for both property types and switch between modern and period specifications daily.
At Kennet valley humidity trap at 140m, Marlborough faces specific challenges that generic specifications do not account for. Wind loading, humidity levels, temperature ranges and frost frequency all differ from sheltered Swindon. Every flat roofing specification we write for Marlborough accounts for these local conditions. The Barton Park estates see the bulk of our standard work, while the listed High Street buildings need conservation-grade materials and techniques.
We survey from the roof, not just the ground. We photograph everything and explain what we find in plain English. We quote in writing with itemised costs and no hidden extras. We use the correct materials for the property type and local conditions. We do not subcontract. Every job carries our written 10-year workmanship guarantee. Call 0179 329 7084 for a free survey.
We use materials appropriate to Marlborough's conditions and property types. For the Barton Park estates, we use modern high-performance materials with enhanced specifications where the local exposure demands it. For the listed High Street buildings, we use period-appropriate materials including lime mortar, reclaimed tiles and traditional lead dressing. All fixings are stainless steel or copper. We never compromise on specification because a cheap job that fails reflects on our reputation.
Free quotes. No call-out fee. Call 0179 329 7084.
0179 329 7084"Excellent flat roofing work on our property. Professional, punctual and fairly priced. The team knew exactly what they were doing and left the site spotless."
"Called for a free quote and they were thorough and honest. Explained everything clearly, no pressure, competitive price. The work itself was done to a high standard. Would recommend."
"Quick response, honest assessment, clean work. They used the right materials for our property type and the result speaks for itself. Ten-year guarantee gives real confidence."
£800–£1,500 for basic work. Free quotes with no call-out fee for all Marlborough properties. Porch: £800–£1,500. Garage: £1,200–£2,500. Extension: £2,500–£5,000. GRP and EPDM both carry 25–30 year manufacturer guarantees. See our flat roof cost guide for detailed pricing.
Yes. Marlborough is 12 miles from our Swindon base. We provide full flat roofing services across Marlborough and surrounding areas. We always strip to deck, inspect joists, and build correct falls. No overlaying. Warm deck insulation specified as standard per Building Regulations. See our warm vs cold deck guide.
Marlborough's Kennet valley humidity trap at 140m creates specific conditions that affect flat roofing work. The Barton Park estates and listed High Street buildings each present different challenges that we address with location-appropriate specifications. We always strip to deck, inspect joists, and build correct falls. No overlaying. Warm deck insulation specified as standard per Building Regulations. See our warm vs cold deck guide.
Marlborough is 12 miles from our base. We can typically be on site within 30-45 minutes for standard appointments and faster for emergencies. We always strip to deck, inspect joists, and build correct falls. No overlaying. Warm deck insulation specified as standard per Building Regulations. See our warm vs cold deck guide.
Yes. NFRC registered, £5m public liability insurance, and every job carries our written 10-year workmanship guarantee. We always strip to deck, inspect joists, and build correct falls. No overlaying. Warm deck insulation specified as standard per Building Regulations. See our warm vs cold deck guide.
Yes. Free, no-obligation quotes for all flat roofing work in Marlborough. We inspect, photograph and explain what we find before quoting. We always strip to deck, inspect joists, and build correct falls. No overlaying. Warm deck insulation specified as standard per Building Regulations. See our warm vs cold deck guide.
We use the correct materials for each property type and location. For Marlborough's listed High Street buildings, we use period-appropriate specifications. For the Barton Park estates, we use modern high-performance materials. Every specification accounts for Marlborough's Kennet valley humidity trap at 140m. We always strip to deck, inspect joists, and build correct falls. No overlaying. Warm deck insulation specified as standard per Building Regulations. See our warm vs cold deck guide.
A cold flat roof has insulation at ceiling level with a ventilated void between the insulation and the deck. A warm flat roof has insulation above the deck with no void. Cold roofs are simpler but require cross-ventilation to prevent condensation — minimum 25mm clear airspace with vents at opposing sides. Warm roofs eliminate the condensation risk but require a vapour control layer below the insulation and careful calculation of insulation thickness to avoid interstitial condensation. We design each flat roof system for the specific property, calculating ventilation or insulation requirements based on the room use, the roof geometry and Building Regulations Part L requirements.
A well-installed GRP or EPDM flat roof needs minimal maintenance, but an annual inspection catches problems before they cause damage. In autumn, clear debris from around outlets and upstands. After heavy rain, check for ponding — water that does not drain within 48 hours indicates a fall problem. Inspect edges and upstands for lifting or separation. Check the underside from inside for condensation signs. For GRP, avoid dragging heavy objects across the surface. For EPDM, keep solvents and oils away from the membrane. These simple checks take 15 minutes and can prevent problems that cost thousands to repair.
Marlborough sits in the Kennet valley at about 140m elevation, sheltered between the Marlborough Downs to the north and Savernake Forest to the south-east. The valley position provides excellent wind protection — chimney stacks and ridge tiles survive much longer here than in hilltop locations. But the sheltering hills reduce airflow that would otherwise dry roof surfaces, creating a humidity trap similar to Cricklade. Morning mist is common from October to April. North-facing slopes develop heavy moss growth. Lime mortar pointing degrades faster from the persistent dampness. We apply the same enhanced ventilation and moss management protocols in Marlborough as in river-level Cricklade.
Traditional three-layer bitumen felt lasts 10 to 20 years in Swindon conditions. High-performance torch-on felt extends this to 15 to 25 years. EPDM rubber membrane carries a manufacturer guarantee of 20 to 25 years and typically lasts 30 or more years in practice. GRP fibreglass carries a 25 to 30 year guarantee and regularly exceeds 35 years. The initial cost difference between these systems is far smaller than the lifespan difference. GRP costs approximately 20 percent more than torch-on felt to install but lasts twice as long — making it significantly cheaper per year of service. This is why we recommend GRP or EPDM for every flat roof replacement in Swindon.
Step one: we strip the existing membrane completely and remove all old material from site. Step two: we inspect every board of the deck, testing for moisture content and structural integrity. Any board that is swollen, delaminated, soft or shows moisture content above 18 percent is replaced with 18mm WBP marine-grade plywood. Step three: we build the correct falls using tapered firring strips — minimum 1 in 40 gradient to the outlet, confirmed with a spirit level. Step four: we install ventilation — soffit vents and opposing wall vents for cold roof construction, or vapour control layer for warm roof construction. Step five: we lay the chosen membrane — GRP resin and glass fibre mat applied in a single continuous layup, or EPDM rubber sheet bonded to the deck with contact adhesive. Step six: we dress all edges with mechanical trim profiles screwed at 200mm centres, form upstands to minimum 150mm height, and seal every junction. Step seven: we clean up, inspect the completed roof with you, and issue your guarantee documentation.
From £150, no call-out fee.
More →Full re-roofs, 10yr guarantee.
More →GRP/EPDM, 25yr guarantees.
More →Same-day 24/7 response.
Call Now →Cleaning, repairs, replacement.
More →Repointing, flashings, stacks.
More →Biocide, 3-5yr protection.
More →uPVC roofline, ventilation.
More →Fitted to your roof.
More →Code 4 flashings, valleys.
More →Repair, matching, re-roofing.
More →Surveys from £120, fee credited.
More →Here is how to tell if this is the right service for your property.
When it is not the answer: If membrane is flexible, deck firm, and leak is from one point, a £200-£400 patch may give years more service.
Check membrane, deck, falls, upstands, outlet.
GRP and EPDM options, itemised.
Strip, new deck, firring strips for falls, membrane, trims, upstands.
10-year workmanship + 25-30yr manufacturer warranty.
| Job | Duration |
|---|---|
| Porch/bay | 1 day |
| Garage | 1-2 days |
| Extension | 2-3 days |
Weather dependent.
Ladder access for most. Scaffold for first-floor flat roofs.
Market town 13 miles south. Conservation area with period properties throughout. Pavement scaffold and skip permits go through Swindon Borough Council; allow a few working days on streets like High Street, Kingsbury Street, Barn Street.
Workmanship 10 years. System warranty 25-30 years.
2-3 days. GRP resin odour during cure — close windows below for a few hours.
GRP needs dry conditions and 5°C+. EPDM more tolerant. Kennet Valley position with cold air drainage — frost pockets in winter.
Last updated: August 2026
Trusted flat roofing covering Marlborough. No obligation.
0179 329 7084