
Roofing
Flat Roofing
Modern flat roofing systems that actually stay watertight.
Overview
Flat Roofing You Can Depend On
Flat roofs have a reputation for problems, but in reality, most failures come down to poor installation rather than the flat roof concept itself. Advanced Roofers Ltd installs modern, high-performance flat roofing systems — including single-ply EPDM rubber, GRP fibreglass and reinforced felt — engineered to shed water effectively and resist UV degradation for decades.
We regularly install flat roofs on house extensions, garages, dormer windows, garden rooms and commercial units. Every installation begins with correct falls to ensure water is directed to outlets rather than pooling on the surface, along with appropriate insulation to meet current building regulations for warm roof construction.
Whether you're replacing an ageing felt roof that's begun to blister and crack, or specifying a flat roof for a new extension, we'll recommend the system best suited to your budget, roof size and expected foot traffic.
We also carry out flat roof inspections and maintenance visits for landlords and commercial clients, identifying early signs of membrane wear, perished trims or blocked outlets before they develop into leaks — a small maintenance visit is almost always cheaper than emergency repairs after water has entered the building.
Flat Roofing at a Glance
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Cost-Effective Solution
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Excellent Waterproofing
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Low Maintenance
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Quick Installation
Category
Roofing
Is It Time?
Signs you may need our flat roofing service
Not sure whether now is the right time to get in touch? These are some of the most common signs our customers mention when they first contact us about flat roofing — if any of these sound familiar, it’s worth arranging a free, no-obligation inspection.
Book a Free Inspection- ⚠Ponding water remains on the roof more than 48 hours after rain
- ⚠Bubbling, blistering or cracking visible on the membrane surface
- ⚠Damp patches or staining on ceilings directly beneath a flat roof
- ⚠The covering is felt-based and more than 15-20 years old
- ⚠Trims, upstands or roof light seals look lifted or perished
Recent Work
Flat Roofing projects we've completed
A few real examples of our workmanship out in the field.



Benefits
Why choose our flat roofing service
Here's what sets our approach apart, from the materials we use to the guarantees we stand behind.
Cost-Effective Solution
Flat roofing is typically more economical than pitched alternatives, making it ideal for extensions, garages and outbuildings.
Excellent Waterproofing
EPDM and GRP systems form a seamless, fully bonded membrane with no joints for water to penetrate.
Low Maintenance
Modern flat roof coverings require minimal upkeep beyond periodic clearing of debris and gutter checks.
Quick Installation
Most domestic flat roofs can be completed in just a few days, minimising disruption to your household.
Long-Lasting Performance
Quality EPDM and GRP systems are rated for 25-50 years of service life when installed correctly.
Design Flexibility
Flat roofs support roof lights, green roof systems and roof terraces, adding versatility to your property.
How It Works
Our Flat Roofing process
A clear, step-by-step approach so you always know what's happening and when.
- 1
Assessment & System Selection
We inspect the roof deck and discuss whether EPDM, GRP or felt best suits your project, budget and usage.
- 2
Substrate Preparation
The existing deck is checked, repaired or replaced as needed to provide a sound, dry base for the new covering.
- 3
Insulation & Falls
Insulation boards are laid to achieve current thermal performance standards, with tapered falls built in to prevent ponding.
- 4
Membrane Installation
The waterproof membrane is fully bonded or mechanically fixed according to the system specification.
- 5
Trims & Upstands
Edge trims, upstands and roof light kerbs are detailed to ensure a completely weathertight finish.
- 6
Final Inspection
We check falls, drainage and all detailing before handing the roof over, backed by our workmanship guarantee.
FAQs
Flat Roofing questions, answered
Still have a question about this service? We're happy to help.
A correctly installed EPDM or GRP flat roof typically lasts 25-50 years, significantly longer than older felt systems.
Related Services
More from our Roofing range
RoofingChimney Repair
Repairs to chimney stacks, pots, flaunching and flashing to keep one of the most exposed parts of your roof weathertight.
Learn more→
RoofingClean Gutters
Thorough gutter clearance, removing leaves, moss and silt so rainwater flows freely instead of overflowing onto your walls.
Learn more→
RoofingClean Roof
Safe, thorough moss, algae and lichen removal to protect your tiles and restore your roof's appearance without pressure damage.
Learn more→Ready to get started with flat roofing?
Request your free, no-obligation quote today and let's discuss your project.