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 - ServicesServices # Flat roofing specialists.Not generalists. Single-ply membrane, EPDM, and the roofline products that finish the job. Flat roofing is our specialism — the systems we're trained, approved and insured to install properly. Get a fixed-price quote 07447 188036 Flat-roofing specialist Sika Plan Approved Installer 20-yr product / 10-yr workmanship ## Flat Roof Installation A properly specified, single-ply or EPDM flat roof — installed by a Sika Plan Approved Installer, guaranteed 20 years on materials and 10 years on workmanship, for a fixed written price with zero call-out fees. View service ## Flat Roof Replacement Strip the failed covering, put the deck and falls right, upgrade the insulation, and re-cover in a manufacturer-warranted system — for a fixed price with a 20-year product guarantee and a 10-year workmanship guarantee. View service ## Flat Roof Repairs Track down the actual leak, fix it properly, and tell you honestly whether repair or replacement is the right call — with no call-out fee and a fixed written quote in 3–4 days. View service ## EPDM Rubber Roofing A one-piece EPDM rubber roof — seamless, low-maintenance, 25+ year design life — installed for a fixed written price by an owner-run, insured, Sika Plan Approved installer. View service ## Single-Ply Membrane (SFlex · Sika Plan · Resitrix) Premium single-ply membrane systems — SFlex, Sika Plan and Resitrix — installed by a Sika Plan Approved contractor with the extended manufacturer warranty that comes with it. View service ## Commercial Flat Roofing Warrantied, long-life commercial flat roofing — installed by a Sika Plan Approved contractor, scheduled around your operations, priced fixed with no day-rate creep. View service ## Fascias & Soffits (UPVC) Replace tired timber fascias and soffits with maintenance-free UPVC — colour-matched to your roofline, correctly ventilated to protect the roof void, fixed price with no call-out fees. View service ## Guttering & Bargeboards Watertight guttering and long-life UPVC bargeboards — installed with correct falls to outlet, sealed properly at every joint, fixed price with no call-out fees. View service ## Cladding — UPVC, Timber-Effect & Composite Long-life external cladding — UPVC, timber-effect and composite — installed on correct battens with proper ventilation, colour-matched to the property, for a fixed written price. View service 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