40 years on the tools. 25-year warranty on every job. Free drone survey with every quote. All flat roofing and waterproofing systems — Dorchester to Southampton, anywhere below the M4.
Drag the handle to see the difference.
40 years specialising in one thing — flat-roof systems that hold up. Bituminous, single ply (incl. EPDM), PU & PMMA liquid systems, GRP. Commercial and residential.
I fly the drone over your roof before I quote. You see every failing seam, blister and ponding zone from above — no guesswork, no climbing, no surprise extras.
The oldest membrane system, still hugely popular. Single-layer through full built-up with insulation. Warranty schemes from 10–30 years — massive range of cost-engineered options.
EPDM, TPO and PVC. Heat-welded or mechanically fastened. EPDM laid in one sheet on most domestic roofs — 50-year potential life, fully recyclable, fire-resistant.
Cold-applied liquid waterproofing — polyurethane and PMMA resins. Fully bonded, seamless, fast cure. Ideal for detail work, complex shapes, parapets, and overlay refurbishments.
Seamless cold-applied resin and topcoat. 20-year material guarantee. Glass-smooth finish, no laps to fail — available on request where the application calls for it.
Leak diagnosis, seam work, patch overlays. Fix it properly first time so you're not paying twice in three winters.
Strip back to the deck, replace rotten boards, lay new insulation & vapour control, finish in your chosen membrane system. Fresh build-up, manufacturer-backed warranty.
Factories, schools, warehouses, extensions. Membrane systems for flat roofs above 200m², built to commercial-grade specs.
Lead outlet chutes, cover flashings, skirts, upstands. Code 4/5 lead properly dressed — the fiddly details that decide whether a roof lasts 5 years or 30.
Also: waterproofing membranes · roof lanterns & skylights · firings & falls · insulation overlays · parapet detailing · flat-to-pitched conversions
Most flat-roof failures come from the layers you can't see. Tap the material tabs to see how each system stacks up — and why every layer matters.
Skip the vapour barrier — the deck rots. Cheap-out on insulation — condensation destroys the build-up. Wrong membrane for the spec — leaks within 3 winters.
I've seen every mistake roofers make. My build-ups last because every layer is specified right for the job — commercial or domestic, GRP or felt, flat or falls.
Based in Dorchester. Covering Poole, Bournemouth, Southampton and anywhere below the M4. When you ring, you're speaking to the owner — 40 years on the tools, and the bloke who'll be on your roof. No call centres, no subcontractors.
Four decades of flat-roofing only. Every failure mode, every material, every trick the cowboys use — I've seen it and learned the fix.
Every GRP and EPDM job carries a 25–30 year manufacturer warranty on the materials. In writing, on every invoice.
I fly the drone before I quote. You see every failing seam, blister and ponding zone from above — no guesswork, no upselling, no surprise extras.
Free survey, fixed price in writing, no surprise extras. What's quoted is what you pay — no VAT surprises, no "while we're up there" add-ons.
Call, text, or drop the form below. I'll get back to you the same working day.
I fly the drone over the roof. You see every problem without needing a ladder. Surveys booked within 24–48 hours.
Quote in writing, dates agreed. No deposit required on standard jobs under £2k.
Before-and-after photos, receipts, clean site left behind. Pay by bank transfer, card, or cash.
Verified Google reviews from homeowners and businesses across Dorset, Hampshire and Somerset.
I very rarely give 5 star reviews but on this occasion the JW Flat Roofing team excelled in every aspect. From the time we got in touch explaining about our leaking flat roof they arrived quickly to do an assessment and then guaranteed we would be dry before Christmas. True to their word they worked in appalling conditions to complete the fit of a completely new roof and all before the Christmas break. The workmanship was superb, they were very pleasant to have around and a special thanks to Clive for his dedicated efforts to complete the job. I cannot recommend them highly enough and we are delighted with the finished product.
We recently had our flat roof at the front of our house replaced as it leaked. The guys from JW did a fantastic job, were very polite and worked very quickly and did a proper professional job to the highest standard. They left the job clean…
Friendly, reliable and professional company.
Just had flat roof replaced at a good price. Work was explained and carried out very well. Great workmanship and would definitely use again.
Superb workmanship, great value and reliable communication. Top work all round.
I recently hired JW Flat Roofing Solutions to handle several repairs on my home in Yeovil, and I couldn't be happier with the results. They replaced several roof tiles, fixed multiple leaks, and carried out essential repairs on my chimney…
I recently used this flat roofing company and couldn't be happier with the…
Based in Dorchester, covering the whole south coast on a daily basis. If your town isn't on the list — ring anyway. Drive time permitting, I cover anywhere below the M4 corridor.
Check your area+ surrounding villages. Based in Dorchester, working anywhere below the M4 corridor.
Free quotes within 24 hours. Drone survey with every quote — I'll come out, fly the roof, and have a proper written price back to you quickly.
I'll ring you back today to arrange your free drone survey. If it's urgent, the fastest thing is the phone: 07584 469397.
Probably a patchy connection. No worries — the fastest way to reach me is the phone.
Call 07584 469397