Insulation costs in Salisbury (2026)
A typical installation costs £400 to £1,300 in Salisbury. Installed costs are within a few percent of the UK average; remote Cornwall and Devon jobs can carry travel surcharges.Here's what to expect by property type, and how to pay less.
Insulation costs in Salisbury at a glance
| Type | From | To |
|---|---|---|
| Loft insulation (top-up) | £300 | £750 |
| Loft insulation (from scratch) | £475 | £1,300 |
| Cavity wall insulation | £400 | £1,300 |
| Solid wall, internal | £4,900 | £16,100 |
| Solid wall, external | £7,800 | £23,500 |
| Underfloor insulation (suspended) | £800 | £2,100 |
Indicative 2026 ranges adjusted for the South West, calibrated against MCS regional installation cost data and Ofgem grant-scheme averages. Always compare multiple quotes — prices vary by installer and property.
Costs by property type in Salisbury
Pre-1920s terraces and period homes
Older solid-wall homes can't take cheap cavity fill; internal wall insulation runs £4,900 to £16,100 in Salisbury, external systems more. ECO4 funding can cover much of this for eligible households.
Inter-war and post-war semis
Cavity-walled semis are the cheap win: £400 to £1,300 in Salisbury, and often free through the Great British Insulation Scheme. Check whether the original cavity was ever filled.
Detached houses
More wall and roof area means bigger jobs, but loft insulation stays affordable at £475 to £1,300 in Salisbury and pays back fastest of any upgrade.
What's different about the South West
- Installed costs are within a few percent of the UK average; remote Cornwall and Devon jobs can carry travel surcharges.
- Top-tier solar irradiance on the south coast and a mild climate that suits air-source heat pumps; many rural homes heat with oil, making grant savings larger.
- All national grants apply: the £7,500 Boiler Upgrade Scheme, ECO4 and GBIS insulation schemes, and the £350 OZEV charger grant.
Common questions
How much does insulation cost in Salisbury?
A typical installation costs £400 to £1,300 in Salisbury in 2026. Installed costs are within a few percent of the UK average; remote Cornwall and Devon jobs can carry travel surcharges. The table above shows ranges by system size and property type.
Why do prices in the South West differ from the UK average?
Installed costs are within a few percent of the UK average; remote Cornwall and Devon jobs can carry travel surcharges. Top-tier solar irradiance on the south coast and a mild climate that suits air-source heat pumps; many rural homes heat with oil, making grant savings larger.
What grants are available in the South West?
All national grants apply: the £7,500 Boiler Upgrade Scheme, ECO4 and GBIS insulation schemes, and the £350 OZEV charger grant.
How do I get an accurate price for my home?
Ranges only narrow once an installer sees your property. Compare quotes from several vetted local installers, free and with no obligation, and contact them free through Find an Eco Installer. No spam calls.
Get accurate Salisbury quotes
The ranges narrow fast once installers see your property. Compare free quotes from vetted installers around Salisbury, with replies typically within 24 hours.
Find installers across the South West
Compare vetted local installers town by town.
Also covering Bath, Taunton and Salisbury.
Insulation costs in other regions
- London
- the South East
- the East of England
- the West Midlands
- the East Midlands
- Yorkshire
- the North West
- Scotland
- Wales
Salisbury prices follow the South West rates. See the full the South West guide.