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Flat roof systems

Torch-on felt roofing in Caldicot

For blocks of flats, shops and houses in Caldicot, torch-on felt remains a practical way to re-roof at a sensible cost. Each job follows the same pattern: survey, written quote, strip and lay, then a fire watch and a walk-round with you before we hand over the written workmanship guarantee.

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

Caldicot at a glance

Postcode districts
NP26
Population
about 9,813 (GeoNames)
Council area
Monmouthshire County Council
Building approval
Monmouthshire County Council building control, or a registered building control approver
Nearest main town
Newport, about 10 miles
Guide price region
Wales (−8% on West Midlands rates)

Why choose torch-on felt roofing in Caldicot?

Torch-on felt is widely specified for blocks of flats and HMOs, in Caldicot 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 town like Caldicot, flat roofs are commonly found on terraced streets with flat-roofed rear kitchens and bathrooms or 1930s semis with flat-roofed garages and kitchen extensions. Wales averages roughly 1,460 mm of rain a year, among the wettest in Britain, so we design for steady run-off: proper falls, clear outlets and upstands well above the finished roof.

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

At Wales guide rates, a typical 18 m² garage roof in torch-on felt comes to £1,400–£2,400 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£1,400–£2,400
Extension (20 m²), felt, new deck + insulation£2,500–£4,300
Block of flats (150 m²), felt + insulation + scaffold£14,300–£25,000
Single garage (18 m²), EPDM rubber£1,450–£2,600
Extension (20 m²), EPDM, new deck + insulation£2,600–£4,500

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?

  • Vapour control layer and warm-roof insulation where needed
  • Strip-off of the existing roof covering and removal of waste
  • Mineral-finished cap sheet, upstands, outlets and edge trims
  • Two- or three-layer reinforced bitumen membrane with staggered laps

Building regulations in Wales

The Welsh Approved Document L applies. Renovating more than half of a roof over a heated room means upgrading it to around 0.16 W/m²K where feasible, and new extension roofs are built to 0.13 W/m²K. Welsh Government guidance is that most re-roofing needs building control approval, so check whenever more than a quarter of a roof is replaced or repaired. We deal with the application as part of the job. More on the rules.

Which nearby areas do we also cover?

Torch-on felt roofing in Caldicot: questions

Do you cover Caldicot?

Yes. Caldicot is part of our Monmouthshire coverage, including postcode districts NP26. 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 Caldicot?

Where the work needs approval it goes to Monmouthshire County 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 Caldicot?

£1,400–£2,400 for a typical 18 m² garage roof in torch-on felt, at Wales guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.

Can I paint or coat an old felt roof?

Reflective or liquid coatings can extend the life of a sound felt roof, but they will not fix wet insulation, a rotten deck or poor falls. A survey shows whether coating or replacement makes more sense.

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.

Other flat roof work in Caldicot

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

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

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