Chertsey at a glance
- Postcode districts
- KT16
- Population
- about 15,967 (GeoNames)
- Council area
- Runnymede Borough Council
- Building approval
- Runnymede Borough Council building control, or a registered building control approver
- Nearest main town
- Woking, about 5 miles
- Guide price region
- South East (+10% on West Midlands rates)
Why choose torch-on felt roofing in Chertsey?
For a commercial roof in Chertsey, such as a shop, surgery or club, torch-on felt offers a hard-wearing mineral finish that takes occasional maintenance traffic. Phased work keeps part of the building weathertight while the rest is re-roofed, so the business can usually keep trading.
Around Chertsey, flat roofs are common on low-rise post-war blocks of flats and on lock-up garage blocks on estates. 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 Chertsey?
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.
| Job | Guide 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?
- Two- or three-layer reinforced bitumen membrane with staggered laps
- 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
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?
- Weybridge · 2 mi
- Staines-upon-Thames · 3 mi
- Egham · 4 mi
- Ashford, Surrey · 4 mi
- Sunbury-on-Thames · 4 mi
- Woking · 5 mi
Torch-on felt roofing in Chertsey: questions
Do you cover Chertsey?
Yes. Chertsey is part of our Surrey coverage, including postcode districts KT16. 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 Chertsey?
Where the work needs approval it goes to Runnymede 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 Chertsey?
£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.
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.
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.