07447 188036info@gnbroofing.co.uk Serving East AngliaMon–Sat 7am–6pm HomeAboutServicesFlat Roof InstallationFlat Roof ReplacementFlat Roof RepairsEPDM Rubber RoofingSingle-Ply Membrane (SFlex · Sika Plan · Resitrix)Commercial Flat RoofingFascias & Soffits (UPVC)Guttering & BargeboardsCladding — UPVC, Timber-Effect & Composite AreasNorfolk NorwichThorpe St Andrew & SprowstonHellesdonCostesseyTaverhamDraytonCringlefordWymondhamDerehamGreat YarmouthThetfordKing's Lynn County overview Norfolk (county overview)Suffolk (county overview)Cambridgeshire (county overview) Our WorkReviewsContact07447 188036Get Free Quote - Home - Areas - Norfolk (county overview) County overview · Norwich-based · Covering Norfolk # Flat RoofingAcrossNorfolk Sika Plan Approved flat roof specialists working right across Norfolk. Free surveys, fixed written quote in 3–4 days, 20-year product / 10-year workmanship guarantee. Get my free fixed-price quote 07447 188036 Survey within the week across Norfolk · No call-out fees · You deal with Neil directly Flat-roofing specialist Sika Plan Approved Installer 20-yr product / 10-yr workmanship PL & EL fully insured Free fixed-price quotes Local coverage ## How we serve Norfolk (county overview) — properly. Norfolk is our home county — we're based in Norwich NR5 and cover the whole of it as part of our normal week. From tight terrace access in the city, to coastal wind-uplift on the Yarmouth seafront, to Fenland exposure in the west, we spec every roof for where it actually sits. ### Where we cover in County overview Norwich, Great Yarmouth, King's Lynn, Thetford, Dereham, Wymondham, plus the surrounding villages and coastal towns from Cromer down to Diss and across to Downham Market. ### Response times Survey within the week across Norfolk. Emergency leaks and storm damage are prioritised within our operating hours (Mon–Sat 7am–6pm). ### Norfolk (county overview) property types we know Victorian and Edwardian terraces in the cities, interwar and post-war semis and bungalows across the suburbs and market towns, coastal seafront stock, agricultural outbuildings and farm workshops in the rural villages, and modern estate development on the edges of every town. ### Common jobs in Norfolk (county overview) Rear-extension flat replacements, garage and porch canopy renewals, coastal wind-lifted felt, town-centre parapet flat renewals, commercial single-ply on light-industrial units, and full UPVC roofline (fascias, soffits, guttering) across every era of stock. Services in Norfolk (county overview) ## Every service we offer is available in Norfolk (county overview). ### Flat Roof Installation New-build and extension flat roofs in Norfolk (county overview), installed as warm-roof build-ups to current Part L. Sika-backed guarantee. View service ### Flat Roof Replacement Strip, deck-check and full replacement for end-of-life flat roofs across Norfolk (county overview). EPDM, Sika Plan or Resitrix. View service ### Flat Roof Repairs Leaks, splits, blisters and storm damage fixed on Norfolk (county overview) properties — with a temporary weatherproof cover if needed today. View service ### EPDM Rubber Roofing Single-sheet EPDM rubber for garages, extensions and small commercial units in Norfolk (county overview). Long life, no seams over most spans. View service ### Single-Ply Membrane (SFlex · Sika Plan · Resitrix) Sika Plan, SFlex and Resitrix single-ply for larger domestic and commercial roofs in Norfolk (county overview). Mechanically fixed to wind-uplift spec. View service ### Commercial Flat Roofing Retail, office, light-industrial and agricultural flat roofs across Norfolk (county overview). Fully insured, Sika Plan Approved workmanship. View service ### Fascias & Soffits (UPVC) UPVC fascias and soffits fitted in Norfolk (county overview) — sealed, ventilated properly, and finished to match your roofline. View service ### Guttering & Bargeboards Full guttering and bargeboard runs in Norfolk (county overview). UPVC systems rated for the exposure your property actually sees. View service ### Cladding — UPVC, Timber-Effect & Composite UPVC, timber-effect and composite cladding across Norfolk (county overview) — low-maintenance, weather-tight, and finished properly at corners and abutments. View service Why Norfolk (county overview) customers use us ## The concrete reasons — not a mission statement. ### Real coverage across Norfolk We work across Norfolk as part of our normal week from our Norwich yard. Travel is batched — no inflated day-rates for jobs outside the ring road. ### Sika Plan Approved workmanship 20-year product / 10-year workmanship guarantee, registered with Sika. The paperwork travels with the property if you sell. ### Fixed written quote before we start Free on-site survey, then a written itemised quote in 3–4 days. No call-out fees, no day-rates, no pressure. ### You deal with Neil directly First call, survey, quote, installation, sign-off, aftercare. One phone number, one person, one job at a time. Local conditions ## What actually goes wrong on Norfolk (county overview) roofs. ### North Sea wind and coastal exposure Norfolk's east coast catches the prevailing wind head-on. Every membrane is fixed to the correct wind-uplift zone, and coastal roofs use stainless-steel fixings and Sika-compatible flashings. ### Ageing housing stock across every era From Victorian terraces to 1970s bungalows to modern new-build, the failures are different in each — but they're all failures we've seen before. The fix is the right build-up for the specific roof, not a one-size spec. ### Fenland cold and condensation West Norfolk in particular sees interstitial condensation on under-insulated flat roofs. Warm-roof rebuild with a proper VCL fixes it — like-for-like re-felt does not. ### Rural mixed-substrate detailing Rural farmhouses and outbuildings across the county often have flat sections added over decades. We strip back to sound substrate and re-form falls, rather than covering over the underlying problem. Our process ## A predictable path from first call to guaranteed sign-off. - 01 Free on-site survey We visit your Norfolk (county overview) property, get on the roof (or safely inspect it), and check the deck, falls, upstands and outlets — not just the surface. - 02 Fixed written quote in 3–4 days You get a written, itemised, fixed-price quote. No day-rates, no hidden extras, no pressure — decide in your own time. - 03 Book a slot that suits you Once you approve the quote, we agree a start date that works around you. Materials are ordered direct from Sika. - 04 Installation by Neil Neil installs the job personally with a small dedicated team. Site is kept tidy, protected and safe throughout. - 05 Sign-off & registered guarantee On completion we walk the finished roof with you, register the Sika-backed guarantee in your name and issue paperwork you can pass on if you sell. Frequently asked in Norfolk (county overview) ## Questions we answer at almost every Norfolk (county overview) survey. Do you really cover all of Norfolk?+Yes — we take on flat roofing work across Norfolk from our Norwich NR5 yard. For jobs further from Norwich we batch surveys so you don't pay a solo travel loading, and every quote is fixed in writing before we start. How fast can you reach Norfolk for a leak?+Active leaks are prioritised inside operating hours (Mon–Sat 7am–6pm). Inside Norfolk we usually get eyes on it within 2–3 working days; further out in Norfolk it may be a little longer, but we'll always tell you honestly on the phone. How much does a flat roof cost in Norfolk?+We don't quote by rate card because no two Norfolk properties are identical — a Victorian rear extension and a 1970s garage conversion need different membranes, insulation upgrades and detailing. Every price is a fixed written quote after a free on-site survey, so you know the number before we lift a tool. Small repairs typically start in the low hundreds; a full single-ply or EPDM replacement is priced per square metre plus upstands, outlets and any timber deck renewal. Do you offer emergency call-outs in Norfolk?+Yes — for active leaks, storm damage and wind-lifted membranes we prioritise Norfolk customers within our operating hours (Mon–Sat 7am–6pm). We'll get a temporary weatherproof cover in place and quote the permanent repair separately. There are no call-out fees. Are you insured and accredited to work in Norfolk?+Yes. Full Public and Employer's Liability insurance, and we're a Sika Plan Approved Installer — meaning Sika inspect our workmanship and back the membrane guarantee. That accreditation applies to every Norfolk job the same as anywhere else we work. Who will actually turn up at my Norfolk property?+Neil, the owner, personally surveys, quotes and installs every job. You won't get passed to a call centre, a sales rep or a subcontracted crew. One point of contact from first call to final sign-off — and the person who quoted it is the person on the roof. Nearby areas ## We also cover these areas close to Norfolk (county overview). Norfolk Flat Roofing in Norwich Sika Plan Approved installers based in NR5. Free surveys, fixed written quotes in 3–4 days, and a 20-year product / 10-year workmanship guarantee — right across the city. Norfolk Flat Roofing in Great Yarmouth Coastal-rated flat roof installation, replacement and emergency repairs across Great Yarmouth, Gorleston-on-Sea and Caister. Wind-uplift specified. Written quote in 3–4 days. Norfolk Flat Roofing in King's Lynn Sika Plan Approved flat roof specialists across PE30–PE34. Free surveys, no call-out fees, fixed written quote in 3–4 days — from a specialist, not a generalist. Or see the full list of areas we cover across Norfolk, Suffolk and Cambridgeshire — or head back to the home page. One next step ## Get a fixed written quote for your Norfolk (county overview) flat roof — in 3–4 days. Free survey. No call-out fees. Sika Plan Approved. 20-year product / 10-year workmanship guarantee. Neil quotes it and Neil installs it. Book my free survey Call 07447 188036 Mon–Sat 7am–6pm Flat-roofing specialists serving homes and businesses across East Anglia. Sika Plan Approved. Fully insured. Owner-run by Neil Cockman. Sika Plan Approved Installer ### Services - Flat Roof Installation - Flat Roof Replacement - Flat Roof Repairs - EPDM Rubber Roofing - Single-Ply Membrane - Commercial Flat Roofing - Fascias & Soffits ### Service Areas - Norwich - Thorpe St Andrew & Sprowston - Hellesdon - Costessey - Taverham - Drayton - Cringleford - Wymondham - Dereham - Great Yarmouth - Thetford - King's Lynn - Norfolk (county overview) - Suffolk (county overview) - Cambridgeshire (county overview) ### Contact - 07447 188036 - info@gnbroofing.co.uk - 6 Gilbard RoadNorwich, NR5 8TR - Mon–Sat 7am–6pm · Closed Sun © 2026 GNB Roofing Services. All rights reserved.Privacy PolicyCookie PolicyTerms & Conditions Call NowGet Free Quote We use essential cookies to make this site work, and optional ones only if you accept. Cookie policy. AcceptReject