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Flat roof systems

Torch-on felt roofing in Worthing

Across West Sussex, including Worthing, 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

Worthing at a glance

Postcode districts
BN11, BN12, BN13, BN14
Population
about 113,866 (GeoNames)
Council area
Worthing Borough Council
Building approval
Worthing Borough Council building control, or a registered building control approver
Nearest main town
Brighton, about 10 miles
Guide price region
South East (+10% on West Midlands rates)

Why choose torch-on felt roofing in Worthing?

On larger roofs in Worthing with poor falls, torch-on felt pairs well with tapered insulation, which builds the fall into the insulation boards. That deals with ponding properly while adding insulation, rather than patching the low spots and waiting for the next leak.

In a large town like Worthing, flat roofs are commonly found on shops with flat-roofed rear stores below flats or low-rise post-war blocks of flats. Much of the South East sits in the drier Thames catchment at roughly 730 mm of rain a year, so the usual failures are at joints, upstands and outlets rather than from sheer volume of rain.

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

At South East guide rates, a typical 18 m² garage roof in torch-on felt comes to £1,650–£2,900 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£1,650–£2,900
Extension (20 m²), felt, new deck + insulation£3,000–£5,150
Block of flats (150 m²), felt + insulation + scaffold£17,100–£29,900
Single garage (18 m²), EPDM rubber£1,750–£3,100
Extension (20 m²), EPDM, new deck + insulation£3,100–£5,350

Does replacing a felt roof mean upgrading the insulation?

Usually, yes, when the roof is over a heated space and more than half of it is being re-covered. In England, Wales and Northern Ireland that is renovation of a thermal element, which should be brought towards the renovation U-value where feasible; a Scottish project goes through the council's building standards service, which confirms whether a warrant applies.

A felt replacement is a good point to switch to a warm roof, with insulation laid above the deck under the new membranes. On larger roofs, tapered insulation can also correct poor falls that have caused ponding, which a patch repair cannot fix. Raising the roof level affects upstands and door thresholds, so we check heights at survey. Any approval is arranged by us as part of the job, and the building regulations page sets out the rules by nation.

What's included?

  • Hot-works checks and fire watch on every torch-on job
  • Two- or three-layer reinforced bitumen membrane with staggered laps
  • Strip-off of the existing roof covering and removal of waste
  • Deck inspection with replacement of damaged boards

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 Worthing: questions

Do you cover Worthing?

Yes. Worthing is part of our West Sussex coverage, including postcode districts BN11, BN12, BN13, BN14. 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 Worthing?

Where the work needs approval it goes to Worthing 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 Worthing?

£1,650–£2,900 for a typical 18 m² garage roof in torch-on felt, at South East 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 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 Worthing

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

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

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