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Flat roof systems

Torch-on felt roofing in Gloucester

Across Gloucestershire, including Gloucester, we use torch-on felt on roofs where a proven, multi-layer system makes sense. The surveyor checks the deck, the falls and any timber near the edges before recommending two or three layers, and every detail is set out in your fixed written quote.

Roofer torching a slate-grey mineral cap sheet on a commercial flat roof behind edge protectionComputer-generated example image

Gloucester at a glance

Postcode districts
GL1, GL2, GL4
Population
about 132,416 (GeoNames)
Council area
Gloucester City Council
Building approval
Gloucester City Council building control, or a registered building control approver
Guide price region
South West (+3% on West Midlands rates)

Why choose torch-on felt roofing in Gloucester?

For a commercial roof in Gloucester, such as a shop, surgery or club, torch-on felt offers a hard-wearing mineral finish that takes occasional maintenance traffic. Phased work keeps part of the building weathertight while the rest is re-roofed, so the business can usually keep trading.

In a large town like Gloucester, flat roofs are commonly found on low-rise post-war blocks of flats or lock-up garage blocks on estates. The South West averages roughly 1,260 mm of rain a year and many roofs face wind off the Atlantic, so we specify fixings and edge details for wind uplift as well as drainage.

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

Guide price in Gloucester: £1,550–£2,700 for a typical 18 m² garage roof in torch-on felt, including VAT at South West rates. The fixed price comes after a free survey for new and replacement roofs.

JobGuide price inc VAT
Single garage (18 m²), torch-on felt£1,550–£2,700
Extension (20 m²), felt, new deck + insulation£2,800–£4,850
Block of flats (150 m²), felt + insulation + scaffold£16,000–£28,000
Single garage (18 m²), EPDM rubber£1,650–£2,900
Extension (20 m²), EPDM, new deck + insulation£2,900–£5,050

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.

What's included?

  • Deck inspection with replacement of damaged boards
  • Vapour control layer and warm-roof insulation where needed
  • Mineral-finished cap sheet, upstands, outlets and edge trims
  • Strip-off of the existing roof covering and removal of waste

Building regulations in England

Replacing more than half of a flat roof over a heated room usually counts as renovating a thermal element, so the roof is insulated to around 0.16 W/m²K where that's technically and economically feasible, and the work is notified to building control: the council or a registered building control approver, unless a registered competent person self-certifies it. A roof on a new extension is built to 0.15 W/m²K. Patch repairs, and most unheated detached garages, don't trigger the upgrade. Structural changes, or a new covering that adds 15% or more to the roof's weight, also need approval. More on the rules.

Which nearby areas do we also cover?

Torch-on felt roofing in Gloucester: questions

Do you cover Gloucester?

Yes. Gloucester is part of our Gloucestershire coverage, including postcode districts GL1, GL2, GL4. Surveys and roofs are carried out by vetted roofing teams working under S&K Property Investments and Improvement Ltd.

Who checks building regulations for a flat roof in Gloucester?

Where the work needs approval it goes to Gloucester City Council building control, or a registered building control approver. We tell you at the survey whether your job needs it and deal with the paperwork as part of the quote.

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

£1,550–£2,700 for a typical 18 m² garage roof in torch-on felt, at South West guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.

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.

How long does it take to lay a torch-on felt roof?

A garage roof typically takes one to two days and an insulated extension two to three. Larger roofs and blocks are phased over longer, with each area made weathertight before the team leaves.

Other flat roof work in Gloucester

Torch-on felt roofing in Gloucester: get a fixed price

Free survey and a written fixed quote for replacement and new roofs. No obligation.

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