Mastic Asphalt
Flat roofs, walkways, gutters, car parks and tanking — installed by City & Guilds craftsmen.
Read moreAll aspects of roofing — London & surrounding areas
All aspects of roofing
London's roofing
specialists.
Mastic asphalt, natural slate, tile, lead, felt, copper & zinc — trusted on historic buildings, landmarks and family homes. Over 40 years on the tools.
40+ years
On the tools across London & surrounding areas
Insurance-backed
10 / 15 / 20 yr guarantees on flat felt roofs
City & Guilds
Apprenticeship-trained mastic asphalt roofers
Family-run
Built on referrals & repeat work
About us
A well established, family-run roofing company.
ASG Roofing Ltd is a family-run business with over 40 years' experience covering London and the surrounding areas. We specialise in all aspects of roofing — from family homes through to historic properties and listed landmarks. Our roofers are City & Guilds trained and take pride in detailed, high-spec work delivered to the standard heritage buildings demand.
Services
All aspects of roofing.
Residential, commercial and industrial. We also offer an emergency call-out service for all roofing problems.
Natural & Man Made Slates
Welsh, Spanish, synthetic and reclaimed slates for traditional and modern properties.
Read moreHigh Performance Felt
10, 15 and 20 year insurance-backed guarantees on new flat felt roofs.
Read moreTiled Roofs
Plain tiles, interlocking concrete tiles and reclaimed tiles for repairs to older properties.
Read moreLead Roofing
Flat, pitched and valley lead roofs, step flashings, cappings, cladding and repairs.
Read more
UPVC Fascia & Guttering
Traditional and modern rainwater systems in a full range of colours.
Read moreCopper & Zinc Roofs
Standing seam zinc and copper roofing and cladding for domestic and commercial.
Read moreDrone Surveys
Aerial roof inspections with 4K photography, thermal imaging and detailed condition reports — no scaffold required.
Read more Our promise
Work carried out effectively and to a very high standard.
At competitive prices, by a tried-and-trusted family firm with over three decades on the tools.
What customers say
Built on referrals.
4.9average across 120+ jobs
"Stripped and re-slated our roof in natural Welsh slate. Immaculate finish, tidy site, finished on time."
"Mastic asphalt re-lay on the flat roof and parapet. First-class job — no leaks two winters in."
"Lead valley and chimney flashings replaced. Proper craftsmen — quoted fairly and delivered."