Blackburn at a glance
- Postcode districts
- BB1
- Population
- about 146,521 (GeoNames)
- Council area
- Blackburn with Darwen Borough Council
- Building approval
- Blackburn with Darwen Borough Council building control, or a registered building control approver
- Nearest main town
- Preston, about 9 miles
- Guide price region
- North West (−5% on West Midlands rates)
When does a garage roof in Blackburn need replacing?
A garage in Blackburn that is becoming a workshop, gym or home office is a good reason to replace its roof. That is the moment to think about insulation and a warm-roof build-up, so the roof does not have to be stripped again when the space is heated.
Blackburn's flat roofs are mostly on newer estates where the first extension roofs are now being replaced, with plenty on low-rise post-war blocks of flats 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 new garage roof cost in Blackburn?
At North West guide rates, a typical 18 m² garage roof in EPDM comes to £1,500–£2,650 including VAT. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Single garage (18 m²), EPDM rubber | £1,500–£2,650 |
| Single garage (18 m²), torch-on felt | £1,450–£2,500 |
| Single garage (18 m²), GRP fibreglass | £1,700–£3,100 |
| Extension (20 m²), GRP, new deck + insulation | £2,850–£5,100 |
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?
- Replacement of soft or swollen deck boards
- Written workmanship guarantee, with material guarantees registered where available
- Free survey of the deck, fall and gutter line
- Strip-out of old felt, chippings and waste
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 Blackburn: questions
Do you cover Blackburn?
Yes. Blackburn is part of our Lancashire coverage, including postcode districts BB1. 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 Blackburn?
Where the work needs approval it goes to Blackburn with Darwen 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 new garage roof cost in Blackburn?
£1,500–£2,650 for a typical 18 m² garage roof in EPDM, at North West guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Can a garage roof be replaced in one day?
A small single garage with a sound deck can often be stripped and re-covered in a day. Deck repairs, a double garage or poor weather can stretch it to two or three.
Can you put a new roof on a garage with a cement sheet roof?
Yes, once any suspected asbestos has been tested and removed by a licensed specialist. The garage then usually needs new timbers and a deck before the new membrane goes on.