Great Sankey at a glance
- Postcode districts
- WA5
- Population
- about 43,793 (GeoNames)
- Council area
- Warrington Borough Council
- Building approval
- Warrington Borough Council building control, or a registered building control approver
- Nearest main town
- Warrington, about 2 miles
- Guide price region
- North West (−5% on West Midlands rates)
Why choose torch-on felt roofing in Great Sankey?
Torch-on felt is widely specified for blocks of flats and HMOs, in Great Sankey 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.
Great Sankey's flat roofs are mostly on low-rise post-war blocks of flats, with plenty on lock-up garage blocks on estates too. The North West is one of England's wetter regions, averaging roughly 1,290 mm of rain a year, so falls, outlets and well-detailed upstands matter more than the membrane colour.
How much does a torch-on felt roof cost in Great Sankey?
Guide price in Great Sankey: £1,450–£2,500 for a typical 18 m² garage roof in torch-on felt, including VAT at North West rates. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Single garage (18 m²), torch-on felt | £1,450–£2,500 |
| Extension (20 m²), felt, new deck + insulation | £2,550–£4,450 |
| Block of flats (150 m²), felt + insulation + scaffold | £14,750–£25,850 |
| Single garage (18 m²), EPDM rubber | £1,500–£2,650 |
| Extension (20 m²), EPDM, new deck + insulation | £2,650–£4,650 |
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
- Vapour control layer and warm-roof insulation where needed
- Deck inspection with replacement of damaged boards
- Mineral-finished cap sheet, upstands, outlets and edge trims
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 Great Sankey: questions
Do you cover Great Sankey?
Yes. Great Sankey is part of our Cheshire coverage, including postcode districts WA5. 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 Great Sankey?
Where the work needs approval it goes to Warrington Borough 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 Great Sankey?
£1,450–£2,500 for a typical 18 m² garage roof in torch-on felt, at North 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.
Can torch-on felt be laid in wet weather?
Not in rain or on a wet deck, because moisture trapped under the membrane causes blisters. Light cold weather is usually workable, but we will postpone rather than lay on a damp surface.