- Guide price
- £2,800–£4,900
- Survey
- Free for new and replacement roofs
- Quote
- Fixed, in writing
- Coverage
- England, Wales, Scotland, NI
Staffordshire at a glance
- Largest towns
- Stoke-on-Trent, Newcastle-under-Lyme, Burton upon Trent, Cannock
- Postcode areas
- B, DE, ST, WS
- Building control
- Stoke-on-Trent City Council, Newcastle-under-Lyme Borough Council, East Staffordshire Borough Council and 6 other councils
- Neighbouring areas
- West Midlands · Derbyshire · Shropshire · Cheshire
- Guide price region
- West Midlands (baseline rates)
How much does a new extension roof cost in Staffordshire?
Guide prices including VAT at West Midlands rates. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Extension (20 m²), EPDM, new deck + insulation | £2,800–£4,900 |
| Extension (20 m²), GRP, new deck + insulation | £3,000–£5,400 |
| Extension (20 m²), EPDM, insulation + 1 rooflight upstand | £3,000–£5,250 |
| Single garage (18 m²), EPDM rubber | £1,600–£2,800 |
Which flat roofs are common in Staffordshire?
Flat roofs in Staffordshire sit on 1960s and 1970s link-detached houses with flat-roofed garages and porches, lock-up garage blocks on estates and shops with flat-roofed rear stores below flats. England averages roughly 870 mm of rain a year and the West Midlands sits close to that, so falls and outlets are the difference between a roof that drains and one that ponds. Approximate 1991–2020 regional averages based on Met Office data.
Building regulations in England
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. Renovated roofs over heated rooms are insulated to around 0.16 W/m²K where that's feasible, and new extension roofs are built to 0.15 W/m²K. In Staffordshire the application goes to Stoke-on-Trent City Council, Newcastle-under-Lyme Borough Council, East Staffordshire Borough Council and 6 other councils. More on the rules.
Which flat roof system suits a kitchen extension?
On a plain rectangular extension, EPDM rubber is a strong, quiet choice that can often be laid in one sheet. It handles the slight movement between an extension and the house well.
Where the roof has a lantern, several rooflights or an internal corner, GRP fibreglass forms neat, rigid details around each one. Torch-on felt is a proven layered system and keeps costs down, though near timber cladding or at fragile junctions we may prefer a cold-applied method. If the extension is overlooked from upstairs windows, a sedum green roof is worth considering, provided the structure can take the extra load.
Whatever the membrane, the insulation sits above the deck as a warm roof. Our warm vs cold roof guide explains why.
How long will my kitchen be disrupted by a new roof?
Most single-storey extension roofs are replaced in two to four working days, depending on size, rooflights and weather. The kitchen usually stays in use throughout.
Expect noise during the strip-out, and occasional dust through gaps around old rooflights, so it helps to cover worktops and move anything fragile off high shelves. We strip only what we can make weathertight by the end of each day. If a rooflight or lantern is being lifted and refitted, there may be a temporary cover over the opening for a short time. Resin systems smell while they cure, so keep the windows below the roof closed on that day.
Which towns in Staffordshire do we cover?
- Stoke-on-Trent
- Newcastle-under-Lyme
- Burton upon Trent
- Cannock
- Tamworth
- Stafford
- Lichfield
- Kidsgrove
- Burntwood
- Longton
- Rugeley
- Leek
- Great Wyrley
- Biddulph
Extension and kitchen roofs in Staffordshire: questions
Which towns in Staffordshire do you cover?
All of Staffordshire. The main towns have their own pages below, and if yours isn't listed we still cover it: send your postcode and we'll confirm.
How much does a new extension roof cost in Staffordshire?
£2,800–£4,900 for a 20 m² extension roof in EPDM with a new deck and insulation, at West Midlands guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Which council handles building control for a flat roof in Staffordshire?
It depends on where the roof is: in Staffordshire that's Stoke-on-Trent City Council, Newcastle-under-Lyme Borough Council, East Staffordshire Borough Council and 6 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.
Why does my extension ceiling get damp in winter if the roof isn't leaking?
That is often condensation in a cold roof, where warm, moist air reaches the cold underside of the deck. A warm-roof replacement with a vapour control layer usually solves it.
Is EPDM or GRP better for a kitchen extension?
Neither is better in every case. EPDM suits simple rectangular roofs with few details, while GRP is often chosen where there are rooflights, corners or occasional foot traffic.
How do I know my extension roof needs replacing rather than repairing?
Repeated leaks, a soft deck, wet insulation or widespread cracking point to replacement. A single defect on a dry, sound roof can usually be repaired.
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