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Flat roof systems

Torch-on felt roofing in Strabane

For blocks of flats, shops and houses in Strabane, 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

Strabane at a glance

Postcode districts
BT82
Population
about 14,198 (GeoNames)
Council area
Derry City and Strabane District Council
Building approval
Derry City and Strabane District Council building control
Nearest main town
Derry/Londonderry, about 14 miles
Guide price region
Northern Ireland (−12% on West Midlands rates)

Why choose torch-on felt roofing in Strabane?

Where a flat roof in Strabane already has a felt covering and the building owner wants like-for-like, torch-on is the natural replacement. The old roof is stripped, the deck checked and the new layers laid, often with warm-roof insulation added when the space below is heated.

Strabane's flat roofs are mostly on shops with flat-roofed rear stores below flats, with plenty on 1960s and 1970s link-detached houses with flat-roofed garages and porches too. Northern Ireland averages roughly 1,150 mm of rain a year, spread over many wet days, so a roof that sheds water quickly to clear outlets lasts far longer than one that holds puddles.

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

At Northern Ireland guide rates, a typical 18 m² garage roof in torch-on felt comes to £1,350–£2,300 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£1,350–£2,300
Extension (20 m²), felt, new deck + insulation£2,400–£4,100
Block of flats (150 m²), felt + insulation + scaffold£13,700–£23,950
Single garage (18 m²), EPDM rubber£1,400–£2,450
Extension (20 m²), EPDM, new deck + insulation£2,450–£4,300

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?

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

Building control in Northern Ireland

In Northern Ireland, Technical Booklet F1 sets roof insulation at 0.18 W/m²K when a roof over a heated room is renovated or newly built, where that's feasible. The district council's building control should be contacted before work starts, and we prepare the details it asks for. More on the rules.

Which nearby areas do we also cover?

Torch-on felt roofing in Strabane: questions

Do you cover Strabane?

Yes. Strabane is part of our County Tyrone coverage, including postcode districts BT82. 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 Strabane?

Where the work needs approval it goes to Derry City and Strabane District Council building control. 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 Strabane?

£1,350–£2,300 for a typical 18 m² garage roof in torch-on felt, at Northern Ireland guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.

Is torch-on suitable for a block of flats?

Yes, layered bitumen systems are widely used on blocks of flats and commercial buildings. Larger roofs often use three layers and insulation, with hot works planned around residents.

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.

Other flat roof work in Strabane

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

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

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