Cavity wall suitability survey across Lancashire
We cover 18 towns in Lancashire, including Preston, Burnley, Blackburn, Blackpool, Morecambe and more.
Every elevation is judged on its own exposure. Parts of Lancashire 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.
Where a Lancashire wall shows cold patches or damp, the survey targets those areas first rather than sampling at random. Buyers and sellers in Lancashire often book this check when a survey report or EPC raises questions about the walls.
Building Regulations in England
Filling an existing cavity wall is notifiable building work in England. Either a building notice goes to building control before the work, or the installer self-certifies it through a government-approved competent person scheme such as CIGA's CWISC scheme. The insulation used must also be suitable for the wall it goes into, which is why the survey checks construction, condition and exposure first.
Sources: Planning Portal: cavity wall insulation and building regulations; CIGA: CWISC competent person scheme.
What the surveyor checks
Wall construction and thickness at window reveals; cavity width and debris with a borescope; brickwork, pointing, render, sills, gutters and downpipes; signs of damp inside and out; air bricks and flues; joins with neighbours and extensions; and the exposure of each elevation to wind-driven rain.
What is included
- Photo-backed written result
- Cavity width and debris check
- Exposure assessment by elevation
- Repairs list where needed
- Fixed install price where suitable
Cavity wall suitability survey prices in Lancashire
| Cavity wall suitability survey guide prices | Guide price |
|---|---|
| Suitability survey with an install quote | Free |
| Standalone survey report (no install quote) | £145–£245 |
The survey is free with an install quote. A standalone report is not insulation, so it is normally standard-rated for VAT; guide prices include VAT. 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 Lancashire:
Tell us about the property
Postcode, property type and why you need the survey.
Survey visit
Walls, cavity, condition and exposure checked and photographed.
Written result
Suitable, suitable after repairs, or not suitable.
Fixed price if you want work
The survey is free when it is for an install quote.