Coventry Roofing Specialists · Since 1973
Flat Roof Specialists in CoventryEPDM Rubber & Torch-On FeltWatertight, Not Watched
Extensions, garages, dormers, porches and commercial single-storey builds all live and die by their flat roof. Get it right once with the correct system for the span, exposure and traffic, and you'll forget it's there for 20–30 years. Get it wrong and you'll be redecorating the ceiling below every winter.
Free drone roof inspection · SafeContractor accredited · Family-run since 1973
Service overview
Flat Roof Specialists
, properly explained.
No jargon, no filler. Here's exactly what this service is, who benefits from it, and why we don't take shortcuts on it.
A flat roof is any roof pitched below 10°, extensions, garages, dormers, porches, bay windows, single-storey commercial buildings. We install and replace flat roofs in two main systems: EPDM synthetic rubber and high-performance torch-on felt. Each has a place; the right choice depends on span, foot traffic, drainage and budget.
Homeowners with an ageing felt garage or extension roof, buyers with a survey flag on the flat roof section, extension builders needing a system that will outlast the plasterwork below it, and commercial property owners with warehouse, office or workshop roofs at end of life.
You need a flat roof replacement when the existing surface is blistering, ponding water, showing cracks or seam failures, when the ceiling below shows staining, or when a felt roof is more than 15 years old, beyond which failure is a question of when, not if.
Flat roofs fail at seams, upstands, drainage points and flashings, the detailing, not the middle of the sheet. Cut-price installs skip the upstand height, fillet detail, drip trim spec or termination bar, and the roof leaks within two winters. Specialist flat-roof work is a different craft from pitched roofing, and we treat it as such.
What happens if it's ignored
The cost of leaving it
or getting it wrong.
The most expensive roofing decisions aren't the ones you make when you call us, they're the ones you make when you don't.
Cheap felt on high-traffic roofs
Standard mineral felt on a garage roof that also stores boxes or plant pots wears through at heel-strike points within 5–7 years. The correct spec is a mineral-cap-sheet torch-on with a walkway pad, or an EPDM rubber system rated for foot traffic.
Ponding water treated as normal
Water that sits on a flat roof more than 48 hours after rain is a fault, not a feature. It accelerates UV degradation, blisters the surface, and freeze-thaws the seams open. We correct falls with a tapered insulation build-up during replacement.
Upstands and flashings below spec
Building regs require minimum 150mm upstands at abutments. Where they're built to 75–100mm to save time, wind-driven rain runs behind the covering and appears as a leak on the ceiling directly below.
DIY torch-on felt
Torch-on is a hot works process requiring correct primer, correct overlap, correct dwell time, and a fire watch. DIY torch-on is a leading cause of roof fires, insurers routinely refuse cover on damage traceable to it.
Our process
A repeatable system,
from first call to sign-off.
Step 1
Free Drone Inspection
We fly a drone across the entire roof, ridge, valleys, verges, flashings and gutter line, capturing high-resolution photography. No ladders leaning against your walls, no guesswork, no call-out fee.
Step 2
Written Diagnosis
You receive a written report with annotated photographs showing exactly what we've found: the condition, the cause, and the specific work required to fix it properly rather than paper over it.
Step 3
Fixed, Itemised Quote
An itemised written quote, materials, labour, access, waste removal, VAT, with clear deposit terms. Domestic jobs under £2,000 need no deposit. Stage payments available on larger projects.
Step 4
Clean, Guaranteed Execution
Lyndon and the four-man crew arrive on time, protect your driveway and garden, work to PASMA/IPAF safe-access standards, and leave the site clean each evening. All workmanship is guaranteed.
Step 5
Final Sign-Off
Once the job is complete we walk the property with you, share drone photography of the finished work, and provide a workmanship guarantee in writing. Your invoice is emailed the same day.
Why Coventry chooses us
Concrete benefits
not vague reassurance.
Right system, right job
We spec EPDM for large single-piece coverage and long-life durability, and torch-on where budget, span and detail suit it, never one system for every job.
20–30 year lifespan
A correctly installed EPDM roof lasts 25–30 years; three-layer torch-on 20–25 years. Both well beyond the 10-year mark that budget felt fails at.
Corrected falls
Every replacement is an opportunity to fix ponding water with tapered insulation. We build the falls in during the strip, not paper over them.
Insulation upgrades
Warm-roof build-ups with 100–150mm PIR insulation dramatically improve thermal performance in extensions and garden rooms below.
Hot works trained
Every operative is trained in hot works permits, torch-on procedure and fire safety, no shortcuts, no insurance disputes.
Written guarantee
Workmanship guaranteed in writing. Manufacturer material guarantees on EPDM systems typically 20 years.
Deep detail
Materials, methods
& where each applies.
The specifics that separate a roof built to last from one built to invoice. Read it or skim it, either way, it's the answer to "what actually goes on my roof?"
EPDM rubber roofing
Ethylene propylene diene monomer, a single-ply synthetic rubber membrane bonded to the substrate. Available in single-sheet coverage up to 15m wide, eliminating seams on most domestic roofs. Highly resistant to UV, ozone and temperature swings. Typical lifespan 25–30 years. Ideal for garages, extensions and commercial low-slope roofs.
Torch-on felt (high-performance built-up)
Modern SBS-modified bituminous membrane, applied in three layers, vapour control, underlay and mineral cap sheet, using controlled propane torching. When installed to BS 8217 with the correct primer and overlaps, lifespan is 20–25 years. Cost-effective for larger commercial roofs and complex detailing.
Where each system fits
Garage roofs: EPDM for a long-life, seam-free finish; torch-on where budget is tighter. Extension flat roofs: EPDM for durability and minimal joints. Commercial single-storey: torch-on or EPDM depending on span and detail. We recommend on suitability, not on which we've got in stock. (We do not currently install GRP fibreglass flat roofing.)
Straight answers
Common questions
before you call.
Can't find yours? Ring us on 024 7671 4341 , Lyndon or Georgina will pick up.
How much does a flat roof replacement cost in Coventry?
A single garage roof in EPDM typically runs £2,500–£4,500. An extension roof £3,500–£7,000 depending on size and insulation upgrades. Commercial flat roofs are priced per square metre after a drone inspection. All quotes are itemised in writing.
Which flat roof system is best, EPDM or torch-on felt?
EPDM is best for long-life single-sheet coverage with minimal seams and no hot works. High-performance torch-on is cost-effective on large commercial roofs and complex upstands. There is no universal 'best', we spec per job.
Do you install GRP fibreglass flat roofs?
No, we do not currently install GRP fibreglass flat roofing systems. Our flat roof offering is limited to EPDM rubber and high-performance torch-on felt, both of which give a proven 20–30 year service life when installed properly.
How long does a flat roof installation take?
A single garage in EPDM: 2–3 days. An extension: 3–5 days. A commercial roof: phased over 1–3 weeks depending on size. Weather-dependent, torch-on hot works need dry conditions.
How long will a new flat roof last?
EPDM: 25–30 years. Three-layer torch-on: 20–25 years. Both well beyond the 10-year lifespan of budget mineral felt.
Can you repair my existing flat roof instead of replacing it?
Sometimes, localised felt splits, blistered patches and small seam failures can be patched to buy 2–5 years. Our drone inspection will show whether repair or replacement is the economical decision.
Do you handle emergency flat roof leaks?
Yes, same-day make-safe where possible, otherwise next-day. We tarp the affected area to stop the leak, then quote for permanent repair or replacement.
Is a flat roof suitable for foot traffic?
Yes, with the correct spec: an EPDM system with a paved terrace overlay, or a torch-on with a walkway pad. Standard felt is not designed for regular foot traffic and will wear through at pressure points.
Are you insured for hot works on my property?
Yes, £5m public liability with hot works cover, and every operative is hot works trained. We issue a hot works permit for every torch-on installation and conduct a one-hour fire watch after completion.
Related services
While we're on the roof,
we handle all of this too.
New Roof Installations
A new roof installation is a complete pitched-roof system fitted to a new build, extension, dormer, garage conversion, or a property being fully re-covered. It includes the timber structure where required, breathable membrane, counter-battens and battens, insulation upgrades, ridge and hip system, verge detailing, valleys, lead flashings, ventilation, and the final tile or slate covering.
View service
Commercial & Industrial Roofing
Commercial and industrial roofing covers everything from a small workshop unit up to full-scale factory and warehouse roofs. Core services include new profile sheet roofing, over-cladding of existing asbestos roofs, new gully liner installation and gully repairs, industrial guttering and downpipe systems, skylight replacement, and planned maintenance contracts (annual or bi-annual).
View service
Roof Repairs
A roof repair addresses a localised failure: slipped or missing tiles, a leaking valley, a failed lead flashing, cracked cement ridge bedding, blocked or split gutters, damaged verges, or a failed skylight seal. The work is targeted, we don't quote for a re-roof when a repair will genuinely last another 15 years.
View service
Ready when you are
Get a free drone survey
for your flat roof specialists.
Written report. Itemised quote. No call-out fee, no obligation. We'll tell you honestly whether you need this service, another service, or no work at all.
- Free drone survey
- No call-out fee
- £15m fully insured
- Which? Trusted Trader
"Excellent service. Lyndon explained the damage and the work needed and their quotes were reasonable. Honest, open communication and did everything they said they would."
, Naheed Khan, Google review