Letchworth Garden City at a glance
- Postcode districts
- SG6
- Population
- about 33,990 (GeoNames)
- Council area
- North Hertfordshire District Council
- Building approval
- North Hertfordshire District Council building control, or a registered building control approver
- Nearest main town
- Stevenage, about 5 miles
- Guide price region
- East of England (+5% on West Midlands rates)
When does a garage roof in Letchworth Garden City need replacing?
If your garage in Letchworth Garden City has an old cement sheet roof, it will eventually crack and let in water. Any suspected asbestos is tested and removed by a licensed specialist first, then the garage can be given new timbers, a deck and a modern membrane that should last for decades with sensible maintenance.
In a town like Letchworth Garden City, flat roofs are commonly found on 1960s and 1970s link-detached houses with flat-roofed garages and porches or low-rise post-war blocks of flats. The East of England is the driest part of Britain, with parts of the Anglian region around 630 mm a year, so summer heat and UV, not rainfall, do most of the ageing on a felt roof.
How much does a new garage roof cost in Letchworth Garden City?
Guide price in Letchworth Garden City: £1,700–£2,950 for a typical 18 m² garage roof in EPDM, including VAT at East of England rates. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Single garage (18 m²), EPDM rubber | £1,700–£2,950 |
| Single garage (18 m²), torch-on felt | £1,600–£2,750 |
| Single garage (18 m²), GRP fibreglass | £1,850–£3,400 |
| Extension (20 m²), GRP, new deck + insulation | £3,150–£5,650 |
Do I need planning permission or building regulations for a garage roof?
Usually not for planning, and often not for building regulations either, if the garage is detached and unheated. Re-covering a roof without materially changing its appearance does not normally need a planning application.
An unheated detached garage is not normally a thermal element, so the insulation rules for renovated roofs do not usually apply. That changes if the garage is attached and heated, used as a room, or being converted. A new roof covering that adds 15% or more to the existing weight, or any structural change, still needs building control approval in England. Wales has its own threshold for re-roofing, Scotland works through building standards and NI through district council building control.
Listed buildings and conservation areas can bring extra controls. We confirm what applies at survey and handle approvals where they are needed; our building regulations page covers the detail.
What's included?
- New membrane dressed into fresh edge and drip trims
- Strip-out of old felt, chippings and waste
- Replacement of soft or swollen deck boards
- Gutter or outlet renewed where the old one has failed
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?
Garage roofs in Letchworth Garden City: questions
Do you cover Letchworth Garden City?
Yes. Letchworth Garden City is part of our Hertfordshire coverage, including postcode districts SG6. 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 Letchworth Garden City?
Where the work needs approval it goes to North Hertfordshire District 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 new garage roof cost in Letchworth Garden City?
£1,700–£2,950 for a typical 18 m² garage roof in EPDM, at East of England guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Should I insulate my garage roof?
Only if the garage is heated or you plan to use it as a room. Insulating a cold, unheated garage roof can cause condensation unless it is designed carefully, so we advise case by case.
Can you replace a shared garage roof in a block?
Yes. We can quote for one garage in a row or the whole block, and we take care with the joins between bays so neighbouring roofs stay watertight.