Flat Roofing in Coventry
Flat roofs rarely fail in the middle. They fail at the edges, the upstands and the outlets - which is why a patch in the centre of the field so often changes nothing.
- Coventry-wide
- Fully insured
- Free fixed quotes
Flat roofing in Coventry covers extension, garage, porch and dormer roofs in EPDM rubber, GRP fibreglass or torch-on felt. Most leaks start at an upstand, a joint, a trim or a blocked outlet rather than in the open field, so we trace the entry point before quoting. New roofs are laid to a proper fall with upstands dressed to height and the perimeter trims fixed correctly.
- A flat roof is not flat: it needs a built-in fall so water leaves rather than ponds.
- Most failures are at the detail - upstands, trims, outlets and joints - not in the middle.
- EPDM, GRP and felt are all sound systems. Which suits depends on the shape, the access and the traffic it takes.
- Ponding water and a soft, spongy deck mean the boards underneath are wet and need replacing, not overlaying.
- Overlaying a failed roof traps the moisture that is already in it, and buys a year or two at best.
The work itself, in plain terms
EPDM rubber roofing
A single-piece rubber membrane with no seams across the field - the fewer joints a flat roof has, the fewer places it can fail. Good on garages, extensions and larger simple shapes.
GRP fibreglass roofing
Laid wet and cured in place into a seamless hard shell with bonded-in trims. Takes foot traffic well, so it suits balconies and roofs that get walked on.
Torch-on felt systems
Multi-layer reinforced bitumen, still the right answer on some shapes and the most repairable system of the three. Not the old single-layer felt that gave flat roofs their name.
Falls, decks and firrings
Where water ponds we re-deck and fit firrings to build a proper fall, instead of laying a new membrane over the same puddle.
Outlets, trims and upstands
Drip trims, edge trims, dressed upstands and clear outlets. This is where flat roofs leak, so it is where the work actually matters.
Leak tracing and repair
We find the entry point rather than patching the stain. Sound systems with one failed detail get repaired, not replaced.
Built around how you own the property
Homeowners
Extension, garage, porch and dormer roofs done once, properly, with the detail work that stops the next leak.
Landlords
The flat roof over a kitchen extension is a common source of repeat tenant complaints. We fix the cause and send you the photographs.
Commercial & retail
Single-ply and felt work on shop and unit roofs, scheduled so you can keep trading.
The jobs that start with a phone call
- 01
A damp patch on an extension ceiling that appears days after rain rather than during it - usually a slow route from a failed upstand.
- 02
Water sitting on the roof for days after a shower, which means there is no effective fall.
- 03
A roof that feels soft or springy underfoot: the deck boards have been wet long enough to delaminate.
- 04
Blisters and ripples in old felt, where moisture trapped underneath expands in the sun.
- 05
A leak that appears exactly where the flat roof meets the house wall, which is the upstand or the cover flashing, not the membrane.
- 06
An overlay done over a wet roof, so the new membrane looks perfect while the ceiling below keeps staining.
Simple, transparent, no pressure
Free inspection & advice
We get up and look properly, then explain what we found in plain English — including when the honest answer is that it does not need doing yet.
Transparent fixed quote
A clear, line-by-line quote with no hidden costs. You decide in your own time.
Expert workmanship
Our qualified, insured team completes the work on time, on budget and to a high standard.
Walkthrough & tidy finish
We clean up fully — magnetic nail sweeps and all — and don't leave until you're 100% happy.
What moves the price
Flat roofs are quoted after measuring and, where there is a leak, after finding it. A sound roof with one failed detail is a repair; a wet deck is a replacement, and the two are very different prices. What moves the number:
Area and shape
Upstands, corners, pipe penetrations, rooflights and changes of level all add detail work - and detail work is where the time goes.
System chosen
EPDM, GRP and felt differ in material cost, labour and how long they take to lay in cold or wet weather.
Whether the deck survives
Re-decking and firrings to create a fall is a bigger job than recovering a sound, well-drained deck.
Access
A garage roof reached off a ladder and a second-floor dormer needing a tower are not the same job.
Insulation
Where a warm-roof build-up is needed or Building Regulations require a thermal upgrade, the insulation layer is part of the price.
Rainwater and trims
New outlets, drip trims and edge trims, and whether the guttering it drains into is up to the job.
Recent roofing work in Coventry
Trusted across Coventry
Flat Roofing in Coventry — your questions answered
Still have a question? Our local team is happy to help — no pressure, no jargon.
Speak to us today0786 5778332Which flat roof system is best?
There is no single answer - it depends on the shape, the access and whether the roof gets walked on. EPDM gives you a seamless membrane on larger simple shapes, GRP a hard shell that takes foot traffic, felt the most repairable and sometimes the most practical on awkward details. We will tell you which we would fit on your roof and why.
Can you just patch my flat roof?
Often, yes - if the system is sound and one detail has failed, a repair is the right answer and we will do that. What we will not do is patch over a wet, soft deck, because the water is already inside and the patch simply hides it.
How long does a flat roof last?
Modern systems last far longer than the old single-layer felt that gave flat roofs their reputation, and each carries its own manufacturer guarantee which we hand over on completion. Lifespan depends much more on the detailing and the fall than on the brand.
Why does my flat roof hold water after it rains?
Because it has no effective fall, either because it was built without one or because the deck has sagged. Ponding water finds every weakness and shortens the life of any membrane, so the fix is to re-deck with firrings rather than to lay a new membrane over the puddle.
Can you fit a rooflight at the same time?
Yes. A flat rooflight is far easier and cheaper to install while the roof is open, and the upstand it sits on gets built and dressed properly as part of the roof rather than cut in later.
How long does the work take?
A garage or small extension roof is usually a day or two. Re-decking, insulation or a complicated shape takes longer. GRP needs dry conditions to cure, so we plan it around the weather rather than rushing it.
Get your flat roof looked at in Coventry
Tell us what you are seeing - a ceiling stain, water sitting on the roof, a soft patch underfoot - and we will come and find out where it is actually getting in before quoting anything.
- No obligation, no pressure, no hidden costs
- Qualified, insured Coventry tradespeople
- Fast response — within 24 hours on urgent jobs