GRP fibreglass, EPDM rubber and torch-on felt flat roofing for extensions, garages and outbuildings. Long-lasting solutions with proper drainage.
Flat roofs are everywhere in North London — on Victorian rear additions, Edwardian kitchen extensions, 1960s tower blocks and modern new-builds. We install GRP fibreglass, EPDM rubber and high-performance torch-on felt systems that deliver genuine 25-year performance.
The vast majority of flat roof failures we diagnose in Barnet result from inadequate falls. Water that cannot drain pools on the surface, accelerating UV degradation in summer and freeze-thaw cracking in winter. Wind-driven rain penetration on exposed hilltop properties is Barnet's defining roofing challenge. Hip tile displacement from gale-force winds, mortar deterioration on 1930s ridge and hip bedding, blocked valleys from heavy leaf-fall in tree-lined avenues, and sagging rafters on large-span 1930s roofs are all frequent repair calls. On the rear extensions typical of Barnet's terraced housing, the original builders often created minimal or zero falls — a problem compounded by subsequent building settlement on London clay.
For the typical rear extension flat roof (8–15m²) on Barnet's terraced housing, we usually recommend GRP fibreglass — the seamless finish eliminates the joint failures that plague older felt systems. For larger flat roofs on Barnet garages, commercial properties, or modern extensions exceeding 20m², EPDM rubber membrane offers superior longevity (50+ years) and flexibility. We assess the specific conditions at your Barnet property — including deck condition, drainage, and access — before recommending a system.
When we strip an old felt flat roof in Barnet, we routinely find rotten deckboard (typically the original softwood has absorbed moisture through failed felt for years), zero insulation (common on pre-1990 rear extensions), incorrect or absent vapour barriers, and falls that have flattened as the building has settled. On properties along High Street Barnet, Station Road, East Barnet Road, Brookhill Road, Mays Lane, Wood Street and surrounding streets, we address all of these underlying issues as part of the flat roof replacement — a new membrane over a rotten deck is money wasted.
Barnet sits at the northern edge of Greater London where suburban housing gives way to semi-rural character. Substantial 1930s semi-detached and detached houses with clay-tiled hipped roofs dominate. High Barnet's older core includes period properties along the Great North Road. The exposed hilltop position — one of London's highest points — means roofs take significant weather punishment from wind-driven rain.
Wind-driven rain penetration on exposed hilltop properties is Barnet's defining roofing challenge. Hip tile displacement from gale-force winds, mortar deterioration on 1930s ridge and hip bedding, blocked valleys from heavy leaf-fall in tree-lined avenues, and sagging rafters on large-span 1930s roofs are all frequent repair calls.
Our team regularly provides flat roofing on High Street Barnet, Station Road, East Barnet Road, Brookhill Road, Mays Lane, Wood Street and surrounding residential streets throughout Barnet.
Call 0203 538 0907 for a free flat roofing quote in Barnet.
💰 £800–£6,000
📍 Barnet, EN5
⭐ 127 reviews · 4.9★
🛡️ 10-year guarantee
"GRP fibreglass on our rear extension replacing old leaking felt. Seamless finish, perfect falls to the outlet, 25-year guarantee certificate provided. No more buckets in the kitchen."
"EPDM rubber membrane on our garage roof. They stripped the old felt, replaced two rotten boards, insulated, and laid the EPDM in a single day. Neat, professional job."
"Balcony flat roof was ponding badly. They re-decked with correct falls, applied GRP with a non-slip finish, and fitted a new aluminium trim edge. Completely transformed."
Need a Roofer? Call Now for a Free Quote
No call-out fee · Same-day emergency response · 10-year guarantee
0203 538 0907All prices are guide ranges based on typical North London properties. We provide free, itemised written quotes after inspecting your specific roof. No hidden costs, no surprises.
Note: Prices include materials and labour. Scaffolding quoted separately where required. VAT-registered — VAT included in all quotes. All work guaranteed for 10 years.
Call 0203 538 0907 for your free quote.
We visit your Barnet property at a time that suits you. Our roofer inspects from ladder level and, where safe, walks the roof. We photograph every issue and explain what we find in plain English — no jargon, no pressure.
Within 24 hours of the inspection, you receive a detailed written quote itemising every element of the work — materials, labour, scaffolding, waste removal. The price you see is the price you pay. No hidden extras, no surprises on completion.
Our team arrives on the agreed date, completes the work to the specification quoted, and cleans up thoroughly. We take completion photographs and walk you through what we've done. You receive a 10-year written guarantee before we leave.
Your 10-year guarantee means if any issue arises from our work, we return and fix it at no cost. We're a local Barnet business — we're not going anywhere. Many of our customers use our annual gutter cleaning and inspection service to maintain their roof proactively.
We work with every roofing material found across Barnet and specify the right product for each property type. We never use cheap substitutes or cut corners on material quality — the materials we install are backed by manufacturer warranties of 15–30 years in addition to our own 10-year workmanship guarantee.
Welsh, Spanish, reclaimed. For period properties and conservation areas.
Handmade and machine-made. Plain tiles, pantiles, and decorative hung tiles.
Marley, Redland, Forticrete. Interlocking and plain profiles for 1930s+ properties.
GRP fibreglass, EPDM rubber, torch-on felt. Topseal, Firestone, ClassicBond approved.
Codes 3–6 milled lead. Flashings, valleys, flat coverings. LSA trained installers.
Mechanical ridge and hip fixing. Storm-proof, maintenance-free alternative to mortar bedding.
Not sure which material is right for your Barnet property? Call 0203 538 0907 — we'll advise based on your property type, budget, and any conservation area requirements.
Every completed project receives a written 10-year workmanship guarantee. If any defect arises from our installation or repair work within 10 years, we return and fix it at no cost. The guarantee is transferable if you sell your property — an asset for any future buyer.
We carry £5 million public liability insurance and £10 million employer's liability insurance. Certificates are available on request before any work begins. You are completely protected on every job we undertake on your property.
Registration with the National Federation of Roofing Contractors means we meet independently assessed standards for quality, safety, and workmanship. NFRC membership is a reliable indicator of a professional, competent roofing contractor.
Spring (March–May): The ideal time for a professional inspection in Barnet. Winter damage is visible — cracked mortar, displaced tiles, failed flashings — and you're ahead of the autumn storm season. Book a free inspection now and address any issues before they worsen over summer.
Summer (June–August): The best conditions for major roofing work in Barnet. Dry weather allows full strip-and-retile projects, flat roof installations, and chimney rebuilds. Lead work is easier in warm temperatures when the metal is more malleable. If you're planning a roof replacement, summer is the optimal window.
Autumn (September–November): Clear gutters and valleys of leaf debris — critical in Barnet's tree-lined streets. Check ridge tiles and flashings before winter storms arrive. A pre-winter roof check costs nothing (we do it free) and can prevent expensive emergency repairs in December and January.
Winter (December–February): Emergency repairs only where possible. Frost, ice, and short days limit what can be safely done on a roof. However, if you have an active leak or storm damage, we respond same-day regardless of conditions. Call 0203 538 0907 any time — 24/7 emergency line.
£800–£6,000 depending on scope. Free quotes in Barnet — call 0203 538 0907.
Emergency: same day across Barnet. Planned: 1-2 weeks. Call 0203 538 0907.
Yes. Full 10-year workmanship guarantee on all flat roofing in Barnet.
Wind-driven rain penetration on exposed hilltop properties is Barnet's defining roofing challenge. Hip tile displacement from gale-force winds, mortar deterioration on 1930s ridge Call 0203 538 0907.
£5m public liability, £10m employer's liability. NFRC registered. Certificates on request.
Yes. Heritage materials, planning support. Extensive experience across Barnet.
References from Barnet homeowners available. Plus 127 verified Google reviews from across North London.
No call-out fees. No obligation. Just an honest quote from a local Barnet roofer who'll turn up when they say they will.
0203 538 0907