Flat Roofing
Durable flat roof installations and repairs using high-quality materials.

About This Service
Specializing in various flat roofing systems including GRP, EPDM, and felt. Whether it's a garage, extension, or main house roof, we provide durable, leak-proof solutions that are built to last.
Modern home extensions and garage conversions often come with flat roofs—but many property owners are shocked to discover their "flat roof" is leaking within just 5-7 years. The problem? Poor initial installation, substandard materials, or a system that wasn't properly maintained. At A-Class Roofing, we specialize in preventing these disasters through expert installation and strategic maintenance that extends flat roof lifespan to 20, 30, or even 40+ years depending on the system chosen. We don't just slap down a membrane and move on; we ensure proper ventilation, correct membrane overlaps, professionally sealed edges, and complete compatibility with your existing roof structure. Our EPDM rubber systems offer incredible flexibility and weather resistance, while our GRP fiberglass systems provide a seamless, maintenance-free aesthetic that architects love. Clients often tell us their new flat roof transforms their loft potential—suddenly loft conversions become feasible because the roof finally stops leaking.
Signs You May Need This Service
- Visible bubbling or blistering on the roof surface
- Water pooling or ponding that doesn't drain
- Cracks or splits in the existing membrane
- Interior damp or stains on ceilings below
- Flat roof over 15 years old without inspection
Key Benefits
Why Choose A-Class Roofing
Material Expertise: We analyze your roof structure and climate to recommend the optimal system for your situation
Proper Installation: We follow Building Regulations precisely, including ventilation, substrate preparation, and edge details
Extended Warranties: All our installations include 20-year guarantees with proper maintenance
Problem-Solving: We inherit problem roofs from poor contractors and solve underlying issues others missed
Fully Guaranteed
All work comes with a minimum 10-year guarantee.
Fast Turnaround
We aim to complete most repairs within 48 hours.
Certified Team
Every member is fully certified and insured.
Get a Free Quote
No obligation. No hidden fees. Just honest advice and transparent pricing.
Request a Quote +44 7432 417119How It Works
Our streamlined process ensures a stress-free experience from start to finish.
Structural Assessment
We inspect the decking to ensure timber joists haven't suffered underlying rot.
Stripping & Preparation
Old compromised materials are stripped off to expose the clean, dry roof deck.
Decking Installation
If required, new OSB3 boards are securely laid down to form a solid waterproof base.
Membrane Application
Depending on preference, EPDM rubber or GRP Fiberglass is precisely laid and fused.
Trims and Edge Sealing
Rainwater drips and wall finishes are installed to completely armor the edges.
Frequently Asked Questions
Common questions about our professional roofing and guttering services.
What is the best flat roofing material?
Both EPDM (rubber) and GRP (fiberglass) are excellent choices. GRP offers incredible durability and a seamless look, while EPDM is highly flexible and great for extreme temperatures.
Does rainwater pooling (ponding) mean my flat roof is failing?
Minor ponding is completely normal for flat roofs. The issue arises if water remains there for several days without evaporating.
How long does a flat roof installation take?
Most residential garages or standard extensions can be stripped, boarded, and waterproofed within 1 to 2 days.
Ready to protect your home?
Get in touch today for a free inspection and a detailed, no-obligation quote for your flat roofing project.