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Flat roof systems

Torch-on felt roofing in Royal Leamington Spa

Torch-on felt in Royal Leamington Spa is a layered roof: an underlay, sometimes an intermediate sheet, and a mineral-faced cap sheet, each heat-bonded to the one below. It is generally the most economical of the main systems and suits garages, extensions and larger roofs on blocks and shops alike.

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

Royal Leamington Spa at a glance

Postcode districts
CV32
Population
about 50,923 (GeoNames)
Council area
Warwick District Council
Building approval
Warwick District Council building control, or a registered building control approver
Nearest main town
Coventry, about 8 miles
Guide price region
West Midlands (baseline rates)

Why choose torch-on felt roofing in Royal Leamington Spa?

Torch-on felt is widely specified for blocks of flats and HMOs, in Royal Leamington Spa as elsewhere, because the system is well understood, widely repairable and governed by a British Standard code of practice. Three-layer builds with insulation are common on larger, multi-occupied roofs.

In a large town like Royal Leamington Spa, flat roofs are commonly found on lock-up garage blocks on estates or low-rise post-war blocks of flats. 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.

How much does a torch-on felt roof cost in Royal Leamington Spa?

At West Midlands guide rates, a typical 18 m² garage roof in torch-on felt comes to £1,500–£2,600 including VAT. The fixed price comes after a free survey for new and replacement roofs.

JobGuide price inc VAT
Single garage (18 m²), torch-on felt£1,500–£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

Is torch-on roofing safe, and what is the difference between two- and three-layer systems?

Yes, torch-on is safe when hot works are properly controlled, because most roof fires linked to torching start at hidden timber or debris near edges and upstands, not on the open roof. Our teams follow a hot-works routine on every job:

  • check eaves, fascias, soffits and wall cavities for timber, nests and debris before lighting a torch;
  • use a cold-applied or self-adhesive membrane, rather than a flame, at edges, against combustible materials and in tight details;
  • keep fire extinguishers on the roof and the gas bottles secured and away from the work;
  • stop torching well before the team leaves, then carry out a fire watch so smouldering is spotted while people are still on site.

As for layers, a two-layer system (underlay plus cap sheet) is common on domestic roofs such as garages and extensions. A three-layer system adds an intermediate sheet, giving more thickness and redundancy, and is often specified on larger, commercial and multi-occupied roofs. The right choice depends on the size and use of the roof and the system's requirements, so we set it out in the quote.

Near a boundary, the external fire performance of the tested build-up, such as a BROOF(t4) classification, can also matter, and we check it where it applies.

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
  • Hot-works checks and fire watch on every torch-on job

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 Royal Leamington Spa: questions

Do you cover Royal Leamington Spa?

Yes. Royal Leamington Spa is part of our Warwickshire coverage, including postcode districts CV32. 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 Royal Leamington Spa?

Where the work needs approval it goes to Warwick District 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 Royal Leamington Spa?

£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.

Can torch-on felt go over an existing felt roof?

Sometimes, if the old roof is dry, well bonded and the deck is sound. Often stripping is better, because overlaying can trap moisture and hide rot; our guide to overlay or strip explains how we decide.

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 Royal Leamington Spa

Torch-on felt roofing in Royal Leamington Spa: get a fixed price

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

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