Flat Roof Specialists Warwickshire

Flat Roofing Specialists Across Warwickshire

A1 Rooflines are Warwickshire's trusted flat roof specialists. Whether you need a brand new flat roof installed, an existing system repaired, or an ageing felt roof replaced with a modern EPDM or GRP system, we have the expertise and experience to get the job done properly.

We work on all types of flat roofs across residential and commercial properties — from garage and outbuilding roofs to flat-roofed extensions, dormer tops and full house flat roofs. Our work covers the whole of Warwickshire including Coventry, Leamington Spa, Warwick, Rugby, Nuneaton, Kenilworth, Stratford-upon-Avon and surrounding areas.

EPDM Rubber Flat Roofs

EPDM (Ethylene Propylene Diene Monomer) rubber roofing is one of the most durable and cost-effective flat roof systems available. A single-ply membrane is bonded to the roof deck, creating a completely seamless, waterproof surface that expands and contracts with temperature changes — preventing cracks and splits.

Lifespan of 25–50 years with minimal maintenance
Highly resistant to UV, ozone and extreme weather
Excellent performance on larger flat roof areas
Lightweight — no extra structural load
Available in black or slate grey finish
Environmentally friendly and recyclable

EPDM is particularly well suited to garage roofs, flat-roofed extensions and larger commercial flat roofs. It's our most popular flat roof system for good reason — it simply performs.

GRP Fibreglass Flat Roofs

GRP (Glass Reinforced Polyester) fibreglass roofing is a premium flat roof system that creates a completely rigid, seamless and waterproof surface. Fibreglass is applied directly to the roof deck using a combination of resin and chopped strand mat, then finished with a coloured topcoat gelcoat — available in a range of colours to complement your property.

Completely seamless — no joints or seams to fail
Extremely strong and rigid surface that won't crack
Ideal for complex shapes, edges and upstands
Cold-applied — no open flame required during installation
Can be walked on once cured — useful for roof terraces
25+ year lifespan with occasional recoating

GRP fibreglass is the ideal choice for roof terraces, balconies, dormers and any flat roof with complex angles or penetrations. The seamless finish makes it one of the most watertight systems available.

Felt Flat Roofs

Traditional felt flat roofing remains a cost-effective solution for garages, sheds and outbuildings where budget is a primary concern. We use high-quality 3-layer torch-on felt systems — a significant improvement over traditional cold-applied felt — which deliver a much longer service life of 10–15 years.

Lower upfront cost than EPDM or GRP
Suitable for garages, sheds and outbuildings
3-layer torch-on felt for maximum durability
Quick installation — often completed in a day
Can be overlaid on existing felt in some cases

We always advise honestly on the relative merits of felt vs. EPDM or GRP for your specific situation. If you're replacing an existing felt roof, upgrading to EPDM or GRP often makes more financial sense over the longer term.

Why Choose A1 Rooflines for Your Flat Roof?

Experienced flat roof specialists — not just general roofers
All three major flat roof systems: EPDM, GRP and felt
No-obligation free surveys and honest, itemised quotes
10-year workmanship guarantee on all flat roof installations
Fully insured with public liability cover
Clean, professional team — we leave your property tidy
Local to Warwickshire — fast response times
Transparent pricing with no hidden extras

Frequently Asked Questions

Which flat roof system is best — EPDM, GRP or felt?

EPDM rubber and GRP fibreglass are both excellent long-life options with 25+ year lifespans. EPDM is highly flexible and ideal for larger surfaces, while GRP offers a completely seamless finish perfect for complex shapes. Traditional felt is a lower-cost option but typically lasts 10–15 years. We'll recommend the right system for your roof and budget.

How long does a flat roof last?

A high-quality EPDM or GRP fibreglass flat roof can last 25–50 years with minimal maintenance. Traditional felt flat roofs typically last 10–15 years. All A1 Rooflines flat roof installations come with a 10-year workmanship guarantee.

Can you replace my old felt flat roof with EPDM or GRP?

Yes — upgrading from felt to EPDM or GRP fibreglass is one of the most common and cost-effective improvements we carry out across Warwickshire. We remove the old felt, prepare the deck, and install the new system with full edge detailing and drainage.

Flat Roof Specialists