Lancashire at a glance
- Largest towns
- Preston, Burnley, Blackburn, Blackpool
- Postcode areas
- BB, FY, L, LA, OL, PR, WN
- Building control
- Preston City Council, Burnley Borough Council, Blackburn with Darwen Borough Council and 10 other councils
- Neighbouring areas
- Greater Manchester · Merseyside · Cheshire · West Yorkshire
- Guide price region
- North West (−5% on West Midlands rates)
Which towns in Lancashire do we cover?
21 towns and cities have their own page; we cover everywhere in between too.
- Preston
- Burnley
- Blackburn
- Blackpool
- Morecambe
- Lancaster
- Lytham St Annes
- Skelmersdale
- Leyland
- Accrington
- Chorley
- Darwen
- Thornton-Cleveleys
- Nelson
- Fleetwood
- Ormskirk
- Rawtenstall
- Colne
- Poulton-le-Fylde
- Heysham
- Haslingden
What does a flat roof cost in Lancashire?
Guide prices at North West rates, including VAT. The fixed price comes after a survey.
| Job | Guide price inc VAT |
|---|---|
| Emergency temporary weatherproofing visit | £170–£430 |
| Commercial roof (100 m²), single-ply + insulation | £12,550–£20,700 |
| Single garage (18 m²), GRP fibreglass | £1,700–£3,100 |
| Single garage (18 m²), torch-on felt | £1,450–£2,500 |
| Single garage (18 m²), EPDM rubber | £1,500–£2,650 |
| Extension (20 m²), GRP, new deck + insulation | £2,850–£5,100 |
Which flat roofs are common in Lancashire?
The climate is part of the brief. 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. Across Lancashire, flat roofs are typically found on 1960s and 1970s link-detached houses with flat-roofed garages and porches, terraced streets with flat-roofed rear kitchens and bathrooms and bungalows with flat-roofed side extensions and dormers. Approximate 1991–2020 regional averages based on Met Office data.
Which flat roof jobs do we take on in Lancashire?
Flat roof surveys and leak tracing
Older extensions and garages in Lancashire frequently have felt roofs that have been patched several times. Before paying for another repair, many owners want to know whether the roof has much life left. That is exactly the question a condition survey answers.
Dormer roofs
High, exposed dormers in Lancashire take the full force of the wind and rain. Edge trims loosen, flashings lift and the felt at the drip edge cracks. Once the faults spread around the perimeter, a new roof with fresh trims usually lasts far longer than another round of repairs.
Balconies and roof terraces
Settled, rocking or cracked paving is a common reason to re-waterproof a terrace in Lancashire. Slabs bedded directly on the membrane can damage it over time. Relaying them on adjustable pedestals protects the waterproofing and gives a level surface that drains underneath.
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 services do we offer in Lancashire?
- Single-ply membrane roofing
- Commercial flat roofing
- EPDM rubber roofing
- Extension and kitchen roofs
- Torch-on felt roofing
- Dormer roofs
- Green and sedum roofs
- Edge trims, outlets and drainage
- Warm roof insulation upgrades
- Flat roof surveys and leak tracing
- Liquid-applied roofing
- Balconies and roof terraces
- Flat roof replacement
- Flat roof repairs
- Porch, bay and canopy roofs
- Garage roofs
- Mastic asphalt roofing
- Flats, HMOs and block roofs
- Rooflights in flat roofs
- Emergency leak repairs
- GRP fibreglass roofing
Flat roofing in Lancashire: questions
Which council handles building control for a flat roof in Lancashire?
It depends on where the roof is: in Lancashire that's Preston City Council, Burnley Borough Council, Blackburn with Darwen Borough Council and 10 other councils. Replacing more than half of a roof over a heated room usually counts as renovating a thermal element, so it is insulated to current standards and notified to building control. We confirm which applies at the survey.
Which postcode areas do you cover in Lancashire?
All of Lancashire, including the BB, FY, L, LA, OL, PR, WN postcode areas. Send your full postcode and we'll confirm.
Do you work on commercial roofs in Lancashire?
Yes: shops, offices, units and blocks of flats across Lancashire, with work planned around opening hours and residents.
Do you cover all of Lancashire?
Yes. We cover the whole of Lancashire, including Preston, Burnley, Blackburn, Blackpool. If your town isn't listed, send your postcode and we'll confirm.