Borescope cavity inspection across Gwynedd
We cover 4 towns in Gwynedd: Bangor, Caernarfon, Holyhead and Porthmadog.
Wind-driven rain is the first thing the surveyor weighs up. 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.
A survey in Gwynedd gives you facts before anyone drills: what the wall is, what is in the cavity and whether it is sound. The written result for your Gwynedd property is plain English: what we found, what it means and what, if anything, to do next.
Building Regulations in Wales
In Wales, filling an existing cavity is also notifiable building work under the Building Regulations as they apply in Wales. A registered installer normally self-certifies it through a competent person scheme; otherwise a building notice goes to your council's building control before work starts. Welsh rules can differ from England's, so the notification route is confirmed in writing on your quote.
Sources: Welsh Government: building work competent person schemes; CIGA: CWISC competent person scheme; Welsh Government: issues arising from cavity wall insulation installations.
How many holes?
Enough to be representative: typically several per elevation, plus targeted checks below windows, at corners and near any damp patches. Each one is photographed and logged.
What is included
- Inspection points on each elevation
- Photos of each point
- Fill type and condition noted
- Holes made good
- Written summary
Borescope cavity inspection prices in Gwynedd
| Borescope cavity inspection guide prices | Guide price |
|---|---|
| Borescope inspection, house | £145–£245 |
| Borescope inspection, block or large building | £295–£595 |
This work is not insulation, so it is normally standard-rated for VAT. Guide prices include VAT where it applies. 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 Gwynedd:
Tell us what is happening
Postcode, property type and what you have noticed.
Price agreed first
We confirm the price before anyone visits.
Visit and checks
Photos and readings at the areas that matter.
Findings in writing
What we found and the options, each priced separately.