- Price per m²
- £60–£105
- Typical life
- 15–25 years
- Manufacturer guarantees
- 10–20 year material guarantees on specified systems
- Typical garage roof
- £1,500–£2,600
West Midlands at a glance
- Largest towns
- Birmingham, Coventry, Wolverhampton, Dudley
- Postcode areas
- B, CV, DY, WS, WV
- Building control
- Birmingham City Council, Coventry City Council, City of Wolverhampton Council and 4 other councils
- Neighbouring areas
- Worcestershire · Warwickshire · Staffordshire · Shropshire
- Guide price region
- West Midlands (baseline rates)
How much does a torch-on felt roof cost in West Midlands?
Guide prices including VAT at West Midlands rates. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Single garage (18 m²), torch-on felt | £1,500–£2,600 |
| Extension (20 m²), felt, new deck + insulation | £2,700–£4,700 |
| Block of flats (150 m²), felt + insulation + scaffold | £15,550–£27,200 |
| Single garage (18 m²), EPDM rubber | £1,600–£2,800 |
| Extension (20 m²), EPDM, new deck + insulation | £2,800–£4,900 |
Which flat roofs are common in West Midlands?
Flat roofs in West Midlands sit on 1960s and 1970s link-detached houses with flat-roofed garages and porches, lock-up garage blocks on estates and 1930s semis with flat-roofed garages and kitchen extensions. England averages roughly 870 mm of rain a year and the West Midlands sits close to that, so falls and outlets are the difference between a roof that drains and one that ponds. Approximate 1991–2020 regional averages based on Met Office data.
Building regulations in England
Replacing more than half of a roof over a heated room usually counts as renovating a thermal element, so it is insulated to current standards and notified to building control. Renovated roofs over heated rooms are insulated to around 0.16 W/m²K where that's feasible, and new extension roofs are built to 0.15 W/m²K. In West Midlands the application goes to Birmingham City Council, Coventry City Council, City of Wolverhampton Council and 4 other councils. More on the rules.
How long does a torch-on felt roof last, and what is the guarantee?
A modern torch-on roof typically lasts 15 to 25 years, and high-performance systems with better membranes can last longer. That is a big step up from older felt roofs, which were often single-layer, unreinforced or poorly bonded.
What shortens the life of a felt roof is usually visible: mineral chippings worn away so the bitumen is exposed to sunlight, blisters where moisture was trapped, split laps, and upstands that have slumped or pulled away from the wall. Ponding speeds all of this up.
Manufacturer material guarantees are available on many specified torch-on systems; they often depend on a particular build-up and registration, which we handle where the system allows. Every re-roof also comes with our written workmanship guarantee, the length of which is stated in the quote, and insurance-backed options can be discussed. Our flat roof lifespan guide compares felt with the other systems.
Should I choose torch-on felt or a different flat roof system?
Choose torch-on felt when you want a proven, layered system at a sensible price, particularly on larger roofs, blocks of flats and commercial buildings where several layers give useful redundancy. It is a weaker choice where hot works are hard to manage safely.
For: generally lower cost per square metre; two or three layers, so a single defect in one layer need not cause a leak; tough mineral finish; long track record and a British Standard code of practice; repairs can be made with compatible materials.
Against: needs a naked flame unless a cold-applied or self-adhesive alternative is used; shorter typical life than EPDM or GRP; the finish is functional rather than decorative; more laps to detail than a single sheet.
On small domestic roofs near timber, EPDM avoids the torch entirely. GRP gives a harder, neater surface. For an overlay, a liquid-applied system is often simpler. Large commercial roofs may suit single-ply, and older buildings may suit mastic asphalt. See our comparison guide.
Which towns in West Midlands do we cover?
- Birmingham
- Coventry
- Wolverhampton
- Dudley
- Walsall
- Solihull
- Sutton Coldfield
- West Bromwich
- Halesowen
- Stourbridge
- Smethwick
- Willenhall
- Tipton
- Bloxwich
- Washwood Heath
- Shirley
- Brierley Hill
- Aldridge
- Acocks Green
- Bartley Green
- Wednesbury
- Kingswinford
Torch-on felt roofing in West Midlands: questions
Which towns in West Midlands do you cover?
All of West Midlands. The main towns have their own pages below, and if yours isn't listed we still cover it: send your postcode and we'll confirm.
How much does a torch-on felt roof cost in West Midlands?
£1,500–£2,600 for a typical 18 m² garage roof in torch-on felt, at West Midlands guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Which postcode areas do you cover in West Midlands?
All of West Midlands, including the B, CV, DY, WS, WV postcode areas. Send your full postcode and we'll confirm.
Can torch-on felt be laid in wet weather?
Not in rain or on a wet deck, because moisture trapped under the membrane causes blisters. Light cold weather is usually workable, but we will postpone rather than lay on a damp surface.
Is torch-on felt better than the old felt roofs?
Yes, considerably. Modern torch-on membranes are polymer-modified and polyester-reinforced, laid in bonded layers, and typically last much longer than the older felt systems they replace.
Why does my felt roof have blisters?
Blisters usually form when moisture or air trapped beneath the felt expands in the sun. A few small, intact blisters may be monitored, but widespread or split blisters point to a repair or replacement.
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