Three generations.
One London skyline.
A family-run roofing company with over 40 years' experience — trusted on historic buildings, listed landmarks and the family homes in between.
Four decades of roofs the city relies on.
ASG Roofing Ltd is a family-run business with over 40 years' experience covering London and the surrounding areas. What started in the 1980s as a small mastic asphalt firm has grown into a specialist roofing contractor working across every aspect of the trade.
Three generations of the same family work on site. That continuity is why surveyors, architects and private clients keep coming back — and why so much of what we do is heritage work where attention to detail isn't optional.
We've been entrusted with historic buildings and listed landmarks across the capital, working alongside conservation officers to match original materials and methods. The same craftsmanship that keeps a Grade II façade authentic is the craftsmanship we bring to every job.
High-spec work. Quiet sites. Honest pricing.
Heritage-grade craft
From Georgian terraces to Grade-listed landmarks, we work to conservation standards — lime mortars, hand-dressed lead, reclaimed Welsh slate, traditional joinery.
All aspects of roofing
Mastic asphalt, natural & man-made slate, plain and interlocking tile, lead, high-performance felt, copper, zinc, UPVC fascia and rainwater systems — under one roof.
Family-run since the 1980s
Three generations of the same family on site. Most of our work comes from word of mouth, surveyor referrals and clients we've looked after for decades.
Insurance-backed guarantees
10, 15 and 20 year insurance-backed guarantees on new flat felt roofs. Fully insured, City & Guilds trained, references on request.
A family business, generation by generation.
- 1980s
Founded as a family firm
Started as a two-man mastic asphalt outfit serving North London. Built a reputation for tidy sites and roofs that don't come back.
- 1990s
Heritage & conservation work
Brought into restoration projects on period townhouses, churches and council-listed buildings across the capital.
- 2000s
Second generation joins
Apprentice-trained sons and nephews come through City & Guilds — broadening the firm into slate, lead, tile and zinc.
- Today
Trusted on London's landmarks
Working on historic buildings, listed landmarks and high-end residential — alongside the everyday repairs that keep London dry.
Got a roof that needs the right hands?
From heritage restoration to a tired flat felt roof — talk to us for an honest survey and a fair quote.