Bognor Regis at a glance
- Postcode districts
- PO21
- Population
- about 63,885 (GeoNames)
- Council area
- Arun District Council
- Building approval
- Arun District Council building control, or a registered building control approver
- Nearest main town
- Worthing, about 14 miles
- Guide price region
- South East (+10% on West Midlands rates)
Why choose GRP fibreglass roofing in Bognor Regis?
Some Bognor Regis homeowners pick GRP for appearance alone. The topcoat comes in several colours, the trims are moulded to match, and the finished roof looks tidy from upstairs windows. With good laying conditions and a sound deck, a GRP roof typically lasts 20 years or more.
In a large town like Bognor Regis, flat roofs are commonly found on bungalows with flat-roofed side extensions and dormers or low-rise post-war blocks of flats. Much of the South East sits in the drier Thames catchment at roughly 730 mm of rain a year, so the usual failures are at joints, upstands and outlets rather than from sheer volume of rain.
How much does a GRP fibreglass roof cost in Bognor Regis?
At South East guide rates, a 20 m² extension roof in GRP with a new deck and insulation comes to £3,300–£5,900 including VAT. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Extension (20 m²), GRP, new deck + insulation | £3,300–£5,900 |
| Dormer (8 m²), GRP, scaffold | £1,550–£2,900 |
| Single garage (18 m²), GRP fibreglass | £1,950–£3,600 |
| Single garage (18 m²), EPDM rubber | £1,750–£3,100 |
| Extension (20 m²), EPDM, new deck + insulation | £3,100–£5,350 |
Will a new GRP roof need extra insulation to meet building regulations?
If the roof is over a heated room and you are replacing more than half of it, usually yes. In England, Wales and Northern Ireland that counts as renovating a thermal element, and in Scotland the council's building standards service will say whether a building warrant applies.
GRP pairs well with a warm roof because the new deck boards it needs can sit on top of the insulation. The result is thicker, so we check at survey that there is room under door cills and wall flashings, and that the upstands can finish around 150 mm above the new surface. Where approval is needed we arrange it with building control or building standards.
Unheated, detached garages normally sit outside the thermal rules. See the building regulations page for each nation, or the warm vs cold roof guide for why we avoid cold roofs where we can.
What's included?
- Moulded GRP trims, kerbs and upstands
- Removal of the old covering and disposal of waste
- Coloured UV-stable topcoat, with anti-slip finish on request
- New OSB3 or plywood deck, fixed at close centres
Building regulations in England
Replacing more than half of a flat roof over a heated room usually counts as renovating a thermal element, so the roof is insulated to around 0.16 W/m²K where that's technically and economically feasible, and the work is notified to building control: the council or a registered building control approver, unless a registered competent person self-certifies it. A roof on a new extension is built to 0.15 W/m²K. Patch repairs, and most unheated detached garages, don't trigger the upgrade. Structural changes, or a new covering that adds 15% or more to the roof's weight, also need approval. More on the rules.
Which nearby areas do we also cover?
- Chichester · 6 mi
- Littlehampton · 6 mi
- Emsworth · 12 mi
- Hayling Island · 13 mi
- Worthing · 14 mi
- Havant · 14 mi
GRP fibreglass roofing in Bognor Regis: questions
Do you cover Bognor Regis?
Yes. Bognor Regis is part of our West Sussex coverage, including postcode districts PO21. Surveys and roofs are carried out by vetted roofing teams working under S&K Property Investments and Improvement Ltd.
Who checks building regulations for a flat roof in Bognor Regis?
Where the work needs approval it goes to Arun District Council building control, or a registered building control approver. We tell you at the survey whether your job needs it and deal with the paperwork as part of the quote.
How much does a GRP fibreglass roof cost in Bognor Regis?
£3,300–£5,900 for a 20 m² extension roof in GRP with a new deck and insulation, at South East guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Can a cracked GRP roof be repaired?
Often, yes. The area is ground back, cleaned and re-laminated with fresh mat and topcoat. If cracks keep returning along joints, the deck or detailing usually needs attention rather than another patch.
Does GRP smell when it is being laid?
Yes, the resin gives off a strong styrene smell while it cures. It usually fades within a day or so, and we advise keeping nearby windows closed while the team works.