Slate Roofing
Reclaimed Welsh slate is our specialty, alongside new Spanish, Chinese, Brazilian and artificial slate — matched to your property and budget.
Family-run roofers · North Wales
Roofers in Llangefni
Roofs built to outlast Welsh weather
Three generations of the Smethurst family on the tools — slate, tile, flat roofing and lead work across Anglesey, Bangor and North Wales. Free survey, a detailed written quote, and a 25-year guarantee on new roofs.
- Free survey & written findings
- Detailed written quotes
- 25-year new roof guarantee
- 24/7 storm damage call-out
No obligation and no pushy sales visit.
Get Your Free Roof Survey
Takes 60 seconds — no obligation
Free survey, real findings
We inspect properly and put the problems in writing, with photographs, so nothing is inside the price.
Clear quotes, clear stages
A written quote up front, then a deposit to hold your date, a mid-job payment, and the balance on completion.
Guaranteed workmanship
Every job carries our workmanship guarantee, with 25 years on new roofs and manufacturer warranties on flat systems.
What we do
Roofing services across North Wales
Domestic, commercial and retail property. Whether it is a single slipped slate or a full rebuild, the same team turns up and the same standard applies. See the full list of roofing services in Anglesey and Bangor.
Tiled Roofing
Repairs, re-tiling and full replacements across all tile types, with cracked tiles and failed membranes put right properly rather than patched.
Flat Roofing
EPDM rubber, GRP fibreglass, felt and liquid coatings. We work with all the common systems so the choice fits the roof and the spend.
Lead Work
All lead work undertaken — flashings, valleys, chimneys and detailing that keeps water where it belongs for decades.
Roof Surveys & Pre-Purchase Inspections
A thorough inspection followed by a detailed written survey, so you know exactly what a roof needs before you commit.
Roof Rebuilds & Loft Conversions
Structural roofing work including full rebuilds and loft conversions, carried out by our own team from strip-out to finish.
Velux & Skylight Fitting
Skylights and Velux windows installed on both pitched and flat roofs, weathered in and finished neatly inside and out.
Emergency & Storm Damage
24/7 call-out for leaks, slipped slates and storm damage. Call-out is typically £150–£250 depending on timing and location.
Listed & Heritage Roofing
Hands-on experience on listed buildings in Betws-y-Coed and on our own listed home, The Old School House in Llangefni.
Our roofing work in Anglesey, Bangor and North Wales
About us
A roofing family, still on the roof
Williams Roofing & Property Maintenance is run by William Smethurst. His father started in the roofing trade at sixteen, taught William the job on site, and — now 68 — still works alongside him. William's two younger brothers are on the team too, which is why the standard of work matters here more than the size of the invoice.
That grounding shows up most on older buildings. We have worked on several listed properties in Betws-y-Coed, and our own home, The Old School House in Llangefni, is a listed building we have fully refurbished ourselves — currently working through the rear roof. Reclaimed Welsh slate is our specialty, and we are equally comfortable with new Spanish, Chinese, Brazilian and artificial slate, all tile types, and every common flat roof system.
We keep our own scaffold towers for smaller jobs so you are not paying for scaffold you do not need, and where the job genuinely calls for full scaffolding we say so upfront. Reviews mention the same things again and again: clear communication, plenty of photographs, options explained, and no mess left behind — see our customer roofing reviews or browse our slate and flat roofing work in North Wales.
How a job runs
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1
Free survey
We visit, inspect the roof thoroughly and photograph what we find.
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2
Written quote
You get a written quote with the survey findings and any problems set out clearly.
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3
Date secured
A deposit books your slot in the diary and we confirm the plan and access.
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4
Work done & signed off
Mid-job payment, final payment on completion, site left clean and your guarantee confirmed.
Service areas
Where we work
Based on Anglesey and working right across North Wales — see every town on our roofing service areas page.
- Bangor
- Llangefni
- Anglesey
- Conwy
- Betws-y-Coed
- Denbigh
- Llandudno
- Colwyn Bay
- Caernarfon
…and surrounding areas across North Wales. Not sure if we reach you? Give us a call, or see our roofing services across North Wales and recent slate, tile and flat roofing projects.
Reviews
5.0 on Google, 100% recommended on Facebook
“William and his two labourers of Williams Roofing were friendly, helpful and professional… We can totally recommend Williams Roofing.”
“Our roof needed serious attention, suffering from cracked tiles and a deteriorated, leaky old membrane… They didn't just patch things up, they provided a complete, high-quality solution… remarkable attention to detail.”
“Very tidy job, no mess left, polite and friendly workers… good communicator… explained the work & options fully and took plenty of photos.”
“Replaced roof section & fitted Velux window. Excellent communication, work completed in expected time… Friendly & trustworthy.”
“Great communication and outstanding workmanship… exceeded my expectations with their reliable service.”
“Fantastic experience from start to finish. The crew was punctual, professional, and left everything clean and tidy.”
FAQs
Questions we get asked most
Contact
Book your free roof survey
Send the form and we will arrange a visit, or call for an emergency. Storm damage and out-of-hours call-outs are typically £150–£250 depending on timing and location.
- Phone
- 01248 000 000
- Area covered
- Anglesey, Bangor & across North Wales
- Hours
- Mon–Sat 8am–6pm · 24/7 emergency call-out