Torch-on felt roofing across South Yorkshire

Price per m²

£57–£100

Typical life

15–25 years

Manufacturer guarantees

10–20 year material guarantees on specified systems

Typical garage roof

£1,450–£2,500

How much does a torch-on felt roof cost in South Yorkshire?

Guide prices including VAT at Yorkshire and the Humber rates. The fixed price comes after a free survey for new and replacement roofs.

Which flat roofs are common in South Yorkshire?

Flat roofs in South Yorkshire sit on 1960s and 1970s link-detached houses with flat-roofed garages and porches, 1930s semis with flat-roofed garages and kitchen extensions and low-rise post-war blocks of flats. England averages roughly 870 mm of rain a year; the Pennine side of Yorkshire is wetter and windier than the east, so we specify for the site rather than the county. 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 South Yorkshire the application goes to Sheffield City Council, Rotherham Council, City of Doncaster Council and 1 other council. More on the rules.

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.

Does replacing a felt roof mean upgrading the insulation?

Usually, yes, when the roof is over a heated space and more than half of it is being re-covered. In England, Wales and Northern Ireland that is renovation of a thermal element, which should be brought towards the renovation U-value where feasible; a Scottish project goes through the council's building standards service, which confirms whether a warrant applies.

A felt replacement is a good point to switch to a warm roof, with insulation laid above the deck under the new membranes. On larger roofs, tapered insulation can also correct poor falls that have caused ponding, which a patch repair cannot fix. Raising the roof level affects upstands and door thresholds, so we check heights at survey. Any approval is arranged by us as part of the job, and the building regulations page sets out the rules by nation.

Which towns in South Yorkshire do we cover?

• Sheffield
• Rotherham
• Doncaster
• Barnsley
• Chapeltown
• Darton
• Dinnington
• Adwick le Street
• Nether Edge
• Rawmarsh
• Fulwood
• Maltby
• Thorne
• Wath upon Dearne
• Conisbrough
• Hoyland
• Wombwell
• Mexborough

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