Buckinghamshire at a glance
- Largest towns
- Milton Keynes, High Wycombe, Aylesbury, Bletchley
- Postcode areas
- HP, MK, SL
- Building control
- Milton Keynes City Council and Buckinghamshire Council
- Neighbouring areas
- Bedfordshire · Hertfordshire · Berkshire · Oxfordshire
- Guide price region
- South East (+10% on West Midlands rates)
Which towns in Buckinghamshire do we cover?
10 towns and cities have their own page; we cover everywhere in between too.
- Milton Keynes
- High Wycombe
- Aylesbury
- Bletchley
- Amersham
- Chesham
- Gerrards Cross
- Chalfont Saint Peter
- Marlow
- Newport Pagnell
What does a flat roof cost in Buckinghamshire?
Guide prices at South East rates, including VAT. The fixed price comes after a survey.
| Job | Guide price inc VAT |
|---|---|
| Balcony (12 m²), liquid-applied, scaffold | £2,100–£3,600 |
| Extension (20 m²), EPDM, insulation + 1 rooflight upstand | £3,300–£5,750 |
| Extension (20 m²), EPDM, new deck + insulation | £3,100–£5,350 |
| Single garage (18 m²), EPDM rubber | £1,750–£3,100 |
| Single garage (18 m²), liquid-applied | £2,250–£3,600 |
| Single garage (18 m²), torch-on felt | £1,650–£2,900 |
Which flat roofs are common in Buckinghamshire?
Weather matters on a flat roof. 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. Across Buckinghamshire, flat roofs are typically found on lock-up garage blocks on estates, newer estates where the first extension roofs are now being replaced and 1960s and 1970s link-detached houses with flat-roofed garages and porches. Approximate 1991–2020 regional averages based on Met Office data.
Which flat roof jobs do we take on in Buckinghamshire?
Liquid-applied roofing
If a flat roof in Buckinghamshire is ageing but still dry, firmly bonded and on a sound deck, a reinforced liquid system can be applied over it. That avoids the cost and mess of a full strip-out, provided the moisture and adhesion checks at survey show the existing roof is fit to build on.
Garage roofs
If your garage in Buckinghamshire 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.
Flat roof repairs
Buying or selling a property in Buckinghamshire with a tired flat roof? A surveyor's report may flag damp, blistering or ponding. A targeted repair can deal with an isolated defect, and where the roof is near the end of its life we will explain that clearly so the cost can be planned.
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 Buckinghamshire?
- Liquid-applied roofing
- Edge trims, outlets and drainage
- Green and sedum roofs
- Commercial flat roofing
- Mastic asphalt roofing
- Torch-on felt roofing
- Flats, HMOs and block roofs
- Flat roof repairs
- Balconies and roof terraces
- Single-ply membrane roofing
- Flat roof surveys and leak tracing
- Extension and kitchen roofs
- Porch, bay and canopy roofs
- Warm roof insulation upgrades
- GRP fibreglass roofing
- Rooflights in flat roofs
- Emergency leak repairs
- Dormer roofs
- Garage roofs
- EPDM rubber roofing
- Flat roof replacement
Flat roofing in Buckinghamshire: questions
Which postcode areas do you cover in Buckinghamshire?
All of Buckinghamshire, including the HP, MK, SL postcode areas. Send your full postcode and we'll confirm.
Which council handles building control for a flat roof in Buckinghamshire?
It depends on where the roof is: in Buckinghamshire that's Milton Keynes City Council and Buckinghamshire Council. 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.
How much is a new flat roof in Buckinghamshire?
A typical 18 m² EPDM garage roof is £1,750–£3,100 and a 20 m² insulated GRP extension roof is £3,300–£5,900, at South East guide rates including VAT.
Which roofing systems do you fit in Buckinghamshire?
EPDM rubber, GRP fibreglass, torch-on felt, liquid-applied and single-ply, plus mastic asphalt repairs. The survey decides which suits your roof.