Midhurst's roofing stock is among the most varied in West Sussex — Horsham stone slab on the oldest buildings, clay plain tile on Victorian and Georgian properties, and standard concrete tile on post-war residential. The timber-framed properties around Knockhundred Row and Wool Lane need roofers who understand how building movement affects tile alignment.
Midhurst's roofing stock is among the most varied in West Sussex — Horsham stone slab on the oldest buildings, clay plain tile on Victorian and Georgian properties, and standard concrete tile on post-war residential. The timber-framed properties around Knockhundred Row and Wool Lane need roofers who understand how building movement affects tile alignment.
GRP fibreglass for garage and extension flat roofs in Midhurst. The valley humidity from the Rother makes a seamless surface important. EPDM is appropriate for large areas. Less coastal UV here than on the coast, but frost resistance is more important.
Flat roofing work in Midhurst covers outbuildings and rear extensions on Georgian and Victorian town centre properties; garage roofs on post-war residential estates. All flat roof work is surveyed before quoting — falls, drainage points, upstand details and any existing structural issues are assessed as part of the free survey.
Free quote — no call-out fee — Midhurst and surrounding area
📞 01243 278085GRP fibreglass provides the longest lifespan and the most seamless finish; it is our default recommendation for most Midhurst properties. EPDM rubber is cost-effective for larger areas and equally durable. Felt is not recommended for any Midhurst property — the lifespan is too short to justify the cost, in Midhurst's Rother valley environment.
"Garage flat roof was leaking after only twelve years on the old felt. GRP conversion — not a drop since. Should have done it years ago."
"Extension flat roof done in GRP. Neat finish, no mess left. They explained every step of the process before starting."
"Had EPDM on the large back extension. Brilliant product, very professional installation. Highly recommend."
Midhurst is inland on the western rother valley, with a more continental climate than the coastal towns — colder winters with more reliable frost, less salt air, but significant damp from the wooded valley setting. For flat roofing in Midhurst this means Horsham stone slabs appear on some of the oldest properties around the town centre — a roofing material that requires specific handling and sourcing that most standard contractors do not encounter regularly. The market town centre has georgian and victorian commercial and residential property with clay plain tile and welsh slate roofing, while the surrounding streets have 20th-century residential stock. We source horsham stone through specialist reclamation suppliers for the small number of midhurst properties that still have it — getting the material right on these properties is not negotiable.
GRP fibreglass for garage and extension flat roofs in Midhurst. The valley humidity from the Rother makes a seamless surface important. EPDM is appropriate for large areas. Less coastal UV here than on the coast, but frost resistance is more important.
A typical garage flat roof in Midhurst costs £920–£1,650. A rear extension flat roof is typically £1,840–£5,200 depending on size and system. We quote by the square metre after a free survey.
GRP fibreglass lasts 25 to 40 years in Midhurst's conditions. EPDM rubber lasts 30 to 50 years. Traditional felt lasts 8 to 12 years at most in Midhurst's Rother valley environment — we do not recommend felt replacement for any Midhurst property.
Yes — felt to GRP conversion is a standard job for us. We remove the existing felt and boarding, install new treated decking, apply the GRP system and finish with a UV-stable coloured gelcoat. The improvement in lifespan is significant and the upfront cost difference is recovered within a few years.
Blistering, cracking, pooling water after rain, or felt that has become soft and spongy to walk on are all signs a replacement is needed rather than a patch repair. If a felt flat roof is over 12 years old in Midhurst's coastal climate and showing any of these signs, replacement with GRP or EPDM is almost always the more cost-effective long-term decision.
Replacing a flat roof like-for-like on a house extension or outbuilding is generally permitted development in Midhurst. Changing the height or footprint, or work on a listed building or in a conservation area, may require consent. We advise at the survey stage.
Correct drainage is the single most important factor in flat roof longevity. All our flat roof installations include assessment of falls, outlet positioning and gutter connections before work starts. We correct any drainage deficiencies as part of the installation — a new flat roof laid to inadequate falls will fail early regardless of the material quality.
Every flat roof survey covers: the existing deck condition (whether the existing decking boards are sound or require replacement), the current falls (whether adequate drainage exists or whether tapered insulation is needed to correct the falls), the upstand heights (whether the covering can be taken up to the required minimum height at edges and abutments), and the outlet position and sizing. In Midhurst, where Rother valley inland properties including Horsham stone stock, we also assess whether coastal UV intensity or harbour moisture exposure affects the system recommendation. A flat roof that drains correctly and has proper upstand details lasts decades longer than one where these fundamentals were not addressed at installation.
GRP fibreglass is applied as a liquid laminate that cures to a rigid seamless surface. We apply two layers of chopped strand mat saturated with resin, followed by the coloured gelcoat finish. The entire surface is seamless — no joints to open, no laps to fail. Upstands are formed to the correct height and radius at all edges. Outlets are GRP-lined. The gelcoat provides UV protection that significantly outlasts felt surface treatment in Chichester's coastal UV environment. Installation requires temperatures above 5°C — we plan flat roof work around weather forecasts to ensure the correct curing conditions.
A standard single-car garage flat roof in GRP typically costs £900 to £1,800 in Midhurst. Rear extension flat roofs up to 25m² cost £1,800 to £4,000. Larger areas of 25 to 60m² run £3,500 to £7,500. These prices include deck inspection, any necessary deck replacement, falls correction where needed, full GRP lamination and gelcoat finish. EPDM rubber costs approximately 10 to 15 per cent less than GRP on the same area with comparable performance over the long term.
Honest pricing from a local Chichester roofer. Call now or request a quote online.
01243 278085 ✉ Email Us Instead