Tangmere's post-war housing stock is now at the point where preventive action is far more cost-effective than reactive repair. The concrete interlocking tile roofs across the former RAF station estate are at the end of their design life — nail sickness is widespread, and ridge mortar failure is the most common call we receive from the village.
Tangmere's post-war housing stock is now at the point where preventive action is far more cost-effective than reactive repair. The concrete interlocking tile roofs across the former RAF station estate are at the end of their design life — nail sickness is widespread, and ridge mortar failure is the most common call we receive from the village.
GRP fibreglass for Tangmere garage and extension flat roofs. Most of the attached garage felt roofs across the estate are now at or past replacement age. Converting to GRP at the same time as any roof work is cost-effective.
Flat roofing work in Tangmere covers attached garages and rear extensions on post-war semis throughout the estate; felt replacement is now overdue on many of these. 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 — Tangmere and surrounding area
📞 01243 278085GRP fibreglass provides the longest lifespan and the most seamless finish; it is our default recommendation for most Tangmere properties. EPDM rubber is cost-effective for larger areas and equally durable. Felt is not recommended for any Tangmere property — the lifespan is too short to justify the cost, in Tangmere's flat coastal plain 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."
Tangmere sits on the open coastal plain east of chichester with flat agricultural land in all directions — no topographic shelter from the prevailing south-westerly weather, and the former airfield site means exceptionally open exposure. For flat roofing in Tangmere this means the flat, unshielded position means ridge tile security is critical — wind uplift on Tangmere ridges is higher than in sheltered residential streets, and poorly-bedded ridges fail here at lower wind speeds. The village is a mix of older rural properties and 20th-century residential development, with a significant proportion of the housing stock from the post-war and 1960s periods that is now approaching or at nail sickness threshold. We include ridge clip inspection in every tangmere survey and specify mechanical clips on all re-bedding work as standard — the open exposure makes supplementary fixing obligatory rather than optional.
GRP fibreglass for Tangmere garage and extension flat roofs. Most of the attached garage felt roofs across the estate are now at or past replacement age. Converting to GRP at the same time as any roof work is cost-effective.
A typical garage flat roof in Tangmere costs £820–£1,500. A rear extension flat roof is typically £1,640–£4,600 depending on size and system. We quote by the square metre after a free survey.
GRP fibreglass lasts 25 to 40 years in Tangmere's conditions. EPDM rubber lasts 30 to 50 years. Traditional felt lasts 8 to 12 years at most in Tangmere's flat coastal plain environment — we do not recommend felt replacement for any Tangmere 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 Tangmere'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 Tangmere. 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 Tangmere, where unshielded open coastal plain with no topographic shelter, 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 Tangmere. 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.
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