Anglesey, Bangor & across North Walesinfo@williamsroofing.co.uk
Newly finished hipped tiled roof with brick chimney stack in North Wales

Roofing services

Roofing services across Anglesey, Bangor & North Wales

Domestic, commercial and retail property. Everything below is carried out by our own family team — from a single slipped slate to a full roof replacement you can see in our recent work.

New Welsh slate roof covering completed on a North Wales property

Slate Roofing

Reclaimed Welsh slate is our specialty, alongside new Spanish, Chinese, Brazilian and artificial slate — matched to your property and budget.

Re-tiled residential roof finished in blue-grey concrete roof tiles

Tiled Roofing

Repairs, re-tiling and full replacements across all tile types, with cracked tiles and failed membranes put right properly rather than patched.

New felt flat roof laid on a house extension in Anglesey

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 flashing dressed where a tiled roof meets a brick wall

Lead Work

All lead work undertaken — flashings, valleys, chimneys and detailing that keeps water where it belongs for decades.

Roofer inspecting weathered chimney stonework during a roof survey

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 rebuild in progress with new battens, breather membrane and roof tiles

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 window fitted and weathered into a grey flat roof

Velux & Skylight Fitting

Skylights and Velux windows installed on both pitched and flat roofs, weathered in and finished neatly inside and out.

Storm-damaged tiled roof with slipped and broken tiles exposing the roof battens

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.

Restored stone chimney stack with new lime flaunching on a listed building

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.

  • Free survey & written findings
  • Detailed written quotes
  • 25-year new roof guarantee
  • 24/7 storm damage call-out

Free survey

Tell us about your roof

Send a few details and we will arrange a free roof survey, then follow up with a written quote and photographs of everything we find. Covering Anglesey, Bangor and the wider North Wales coast.

Call nowFree survey