Cavity insulation top-up across Dunbartonshire
We cover 5 towns in Dunbartonshire: Bearsden, Clydebank, Bishopbriggs, Dumbarton and Kirkintilloch.
Every elevation is judged on its own exposure. Parts of Dunbartonshire face some of the heaviest wind-driven rain in the UK, especially exposed coastal and upland sites. Here the survey is stricter: some walls suit only certain certified systems, and some should not be filled at all.
For semi-detached and terraced homes in Dunbartonshire, cavity barriers are fitted where your wall meets your neighbour's so the fill stays on your side. Where a Dunbartonshire property has an extension or a conservatory, we check how the old and new walls meet, because that junction is often missed.
Building standards in Scotland
In Scotland, work associated with thermal insulating material within a wall is listed in schedule 3 of the Building (Scotland) Regulations as work that does not need a building warrant. It must still meet the building standards, so the survey still checks that the wall and the chosen material are suitable, including exposure to wind-driven rain.
Funding in Scotland
- Home Energy Scotland is the starting point for the Home Energy Scotland Grant and Loan and for Warmer Homes Scotland, which can include cavity wall insulation.
- Many councils also run area-based schemes for insulation in particular streets or estates.
- ECO4 runs until 31 December 2026 across Great Britain, including Scotland.
Sources: Scottish Government: building work not requiring a warrant (schedule 3); Home Energy Scotland; mygov.scot: grants and loans for energy saving improvements; GOV.UK: extending the ECO4 end date, government response.
How do I know if my walls need a top-up?
Cold patches on internal walls, a thermal image showing uneven heat loss, or an EPC that says 'filled cavity' when parts of the house feel colder are all signs. Extensions are a common cause: the new wall is insulated as built, but the old wall it joins may have been left partly empty.
What is included
- Borescope survey at several points
- Map of filled and empty sections
- Targeted fill with a compatible system
- Making good
- Written result with photos
Cavity insulation top-up prices in Dunbartonshire
| Cavity insulation top-up guide prices | Guide price |
|---|---|
| Detached house | £1,295–£2,295 |
| Semi-detached house | £795–£1,495 |
| End-terrace house | £695–£1,295 |
| Detached bungalow | £695–£1,295 |
| Semi-detached bungalow | £595–£995 |
| Mid-terrace house | £595–£995 |
No VAT is charged on installing insulation in homes until 31 March 2027 (then 5%). Guide ranges only: the fixed price is confirmed in writing before any work starts, and anything that could not be seen at survey is agreed with you first.
How it works in Dunbartonshire:
Tell us about the property
Postcode, property type and what you need.
Free survey
Walls, cavity, condition and exposure checked and photographed.
Written result and price
Suitable, suitable after repairs, or not suitable, with a fixed price.
Work and paperwork
Installation, making good, and the regulations and guarantee paperwork.