Hampshire at a glance
- Largest towns
- Southampton, Portsmouth, Basingstoke, Gosport
- Postcode areas
- BH, GU, PO, RG, SO, SP
- Building control
- Southampton City Council, Portsmouth City Council, Basingstoke and Deane Borough Council and 10 other councils
- Neighbouring areas
- Isle of Wight · Berkshire · West Sussex · Surrey
- Guide price region
- South East (+10% on West Midlands rates)
Which towns in Hampshire do we cover?
24 towns and cities have their own page; we cover everywhere in between too.
- Southampton
- Portsmouth
- Basingstoke
- Gosport
- Waterlooville
- Farnborough
- Eastleigh
- Winchester
- Havant
- Andover
- Fareham
- Aldershot
- Fleet
- Totton
- New Milton
- Bordon
- Hythe
- Yateley
- Alton
- Emsworth
- Hedge End
- Romsey
- Hayling Island
- Tadley
What does a flat roof cost in Hampshire?
Guide prices at South East rates, including VAT. The fixed price comes after a survey.
| Job | Guide price inc VAT |
|---|---|
| Extension (20 m²), felt, new deck + insulation | £3,000–£5,150 |
| Extension (20 m²), EPDM, insulation + 1 rooflight upstand | £3,300–£5,750 |
| Porch or bay (4 m²), EPDM | £850–£1,400 |
| Extension (20 m²), EPDM, new deck + insulation | £3,100–£5,350 |
| Dormer (8 m²), GRP, scaffold | £1,550–£2,900 |
| Single garage (18 m²), liquid-applied | £2,250–£3,600 |
Which flat roofs are common in Hampshire?
The climate is part of the brief. 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 Hampshire, flat roofs are typically found on bungalows with flat-roofed side extensions and dormers, low-rise post-war blocks of flats and 1930s semis with flat-roofed garages and kitchen extensions. Approximate 1991–2020 regional averages based on Met Office data.
Which flat roof jobs do we take on in Hampshire?
Commercial flat roofing
When a roof over heated space in Hampshire is replaced, insulation rules usually apply. We design the warm-roof build-up towards the required standard where that is feasible and handle building control where it is needed, so the work is signed off properly and the building is better insulated afterwards.
Flats, HMOs and block roofs
Service charge budgets for blocks in Hampshire do not always stretch to a whole roof at once. We can phase a re-roof over more than one budget year, pricing each phase separately in writing and keeping every section watertight in between, so the building stays protected while the cost is spread.
Torch-on felt roofing
Torch-on felt is widely specified for blocks of flats and HMOs, in Hampshire as elsewhere, because the system is well understood, widely repairable and governed by a British Standard code of practice. Three-layer builds with insulation are common on larger, multi-occupied roofs.
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 Hampshire?
- Commercial flat roofing
- GRP fibreglass roofing
- Warm roof insulation upgrades
- Extension and kitchen roofs
- Rooflights in flat roofs
- Flat roof surveys and leak tracing
- Green and sedum roofs
- Torch-on felt roofing
- Porch, bay and canopy roofs
- Flats, HMOs and block roofs
- Single-ply membrane roofing
- Edge trims, outlets and drainage
- Liquid-applied roofing
- Dormer roofs
- Flat roof repairs
- Garage roofs
- EPDM rubber roofing
- Emergency leak repairs
- Balconies and roof terraces
- Mastic asphalt roofing
- Flat roof replacement
Flat roofing in Hampshire: questions
Who approves flat roof work in Hampshire?
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 check this at the survey and handle the application as part of the job.
How much is a new flat roof in Hampshire?
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 postcode areas do you cover in Hampshire?
All of Hampshire, including the BH, GU, PO, RG, SO, SP postcode areas. Send your full postcode and we'll confirm.
Do you cover all of Hampshire?
Yes. We cover the whole of Hampshire, including Southampton, Portsmouth, Basingstoke, Gosport. If your town isn't listed, send your postcode and we'll confirm.