Cavity wall suitability survey for Caernarfon properties
Caernarfon is among the towns we cover in Gwynedd, alongside Bangor, Porthmadog and Holyhead. It is around 6 miles south-west of Bangor.
The written result for your Caernarfon property is plain English: what we found, what it means and what, if anything, to do next. Where a Caernarfon wall shows cold patches or damp, the survey targets those areas first rather than sampling at random.
Before any material is chosen, exposure is checked. Parts of Gwynedd 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.
On the rules side, in Caernarfon filling a cavity is notifiable work under the Building Regulations as they apply in Wales, usually self-certified through a competent person scheme.
Rules in Wales
Filling a cavity is notifiable work under the Building Regulations as they apply in Wales, usually self-certified through a competent person scheme if insulation work follows.
Sources: Welsh Government: building work competent person schemes; CIGA: CWISC competent person scheme.
What you get
A clear result: suitable, suitable after repairs, or not suitable. Where repairs are needed first, they are listed and priced separately so you can choose who does them. The survey is free when you are getting an install quote.
What is included in Caernarfon
- Cavity width and debris check
- Fixed install price where suitable
- Exposure assessment by elevation
- Photo-backed written result
Guide prices for Caernarfon
| 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.
From enquiry to finish in Caernarfon:
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.