GRP fibreglass and EPDM flat roofing specialists in Hartham, Chippenham. Extension and garage flat roof replacement. Free no-obligation surveys.
In short: Flat Roofing in Hartham, Chippenham: Flat roofing runs £900–£2,500 for a typical extension. We cover Hartham (SN15) with free quotes, no call-out fee and a 10-year guarantee. Failing felt flat roofs are best replaced in GRP or EPDM rather than patched.
Flat roofing calls from Hartham are primarily flat roof extensions on mixed-era properties, with moisture levels from the river affecting membrane longevity. We replace felt flat roofs with GRP fibreglass as standard — same cost bracket, 25-year material guarantee, seamless. Hartham is 1 mile from our base — free flat roof surveys throughout the area.
Hartham lies alongside the River Avon between Chippenham town centre and the rural south, with Victorian and Edwardian properties near the river and post-war housing further inland. The riverside location creates the highest moisture exposure in the Chippenham area — lead corrosion is measurably faster here than on drier inland streets, and moss growth on north-facing slopes is among the most aggressive in our coverage.
Free quotes. No call-out fees. under 10 minutes from Chippenham.
Hartham sits alongside the River Avon between Chippenham town centre and the rural south. The riverside location creates the highest moisture exposure in the Chippenham area — lead corrosion is measurably faster here, and moss growth on north-facing slopes is the most aggressive in our coverage.
Victorian and Edwardian properties near the river with post-war housing further inland. The riverside Victorian stock has some of the most demanding maintenance profiles in Chippenham due to the combination of age and moisture exposure.
Lead valley and flashing failures accelerated by river moisture are the primary call — we specify code 5 lead on exposed riverside elements as standard. Aggressive moss on north-facing slopes is the secondary maintenance category.
The River Avon creates conditions at Hartham that require specification adjustments compared to inland Chippenham properties. Code 5 lead, 2-year moss cleaning cycles, and annual gutter clearing are standard recommendations here.
GRP fibreglass is our standard recommendation for flat roof replacement across all Chippenham neighbourhoods — same cost bracket as re-felting, 25-year material guarantee, and no joints to fail. The deck inspection we carry out on every strip identifies any rotten boards before the new membrane is applied. Drainage fall correction is included as standard — ponding flat roofs were often built with insufficient falls and the membrane replacement alone doesn't resolve the underlying drainage issue. Where the existing felt is more than 25 years old, the boards beneath are always inspected before any new membrane is specified.
We carry GRP materials for neighbourhood emergency visits — same-day temporary seal is available when a full replacement needs scheduling. For properties in high-moisture areas of Chippenham, GRP is particularly well suited: it's seamless, UV stable, and handles the moisture environment significantly better than standard felt.
Flat roof extensions on mixed-era properties, with moisture levels from the river affecting membrane longevity. Call 01249 247 076 for a free survey.
Costs depend on the specific scope. GRP up to 20m²: £1,200–£2,500. EPDM: £900–£1,800. Free written quote. Call 01249 247 076.
Hartham is 1 mile from our Chippenham base — under 10 minutes. Non-urgent repairs typically within 1–2 working days. Emergency same day.
Yes — free written survey with photographs and condition ratings. No commitment. Call 01249 247 076.
We work on victorian and mixed properties regularly in Hartham and understand the specific maintenance patterns for this era. We carry the appropriate materials for this housing era. Survey before any recommendation.
No call-out fee during business hours. Free written quotes before any work starts. 24/7 emergency response available.
We cover all of Chippenham including Monkton Park, London Road, Stanley, Sheldon and outlying towns including Corsham, Calne, Melksham and all of north Wiltshire.
No call-out fees. Written quote. under 10 minutes from Chippenham.
01249 247 076 ✉ Email UsHartham is a riverside area north of Chippenham with a mix of older stone and brick property and Hartham Park's period estate, close to the Avon watermeadows. On this kind of stock, the problems we see most in Hartham are heavy moss on the shaded riverside roofs, blocked valleys from the mature tree cover, and leadwork on the older period stock. Hartham sits right on the Avon, so humidity is high, moss growth fast and drying slow, especially on the riverside slopes.
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.
Hartham's riverside and estate properties vary from tight period plots to open grounds; period and stone stock often needs matching materials. Scaffold and skip permits go through Wiltshire Council, and on the lanes toward Hartham Park we allow extra time for setup. Access is always itemised in your written quote, never a hidden extra.
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.
Last updated: August 2026
© Chippenham Roofing Experts · SN15 · 01249 247 076
NFRC Registered · Fully Insured · 10-Year Guarantee