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Porthmadog · Gwynedd

Borescope cavity inspection in Porthmadog

A borescope inspection pushes a small camera through a hole about the size of a pencil into the cavity to see whether it is empty, partly filled or filled, what the fill is and whether there is debris. We cover Porthmadog and the wider LL49 postcode district, and the price is confirmed before anyone visits.

Book a borescope inspection in Porthmadog

Covering Porthmadog and the LL49 district. Tell us about the property. We confirm the price before you book.

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Borescope cavity inspection for Porthmadog properties

Porthmadog is among the towns we cover in Gwynedd, alongside Caernarfon and Bangor. It is about 19 miles south of Bangor.

Every inspection point in Porthmadog is photographed and logged, so you have a record to show a buyer, lender or contractor. A survey in Porthmadog gives you facts before anyone drills: what the wall is, what is in the cavity and whether it is sound.

Every elevation is judged on its own exposure. 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.

For regulations, if cavity wall insulation follows in Porthmadog, 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.

When a borescope check helps

Before filling, to confirm the cavity is empty and clean. Before buying a house, to see if the EPC's claim of 'filled cavity' is true. When damp has appeared and you need to know whether the fill is wet or bridged. Before a top-up, to map which panels are empty.

What is included in Porthmadog

  • Photos of each point
  • Written summary
  • Holes made good
  • Inspection points on each elevation

Guide prices for Porthmadog

Borescope cavity inspection guide prices
Borescope cavity inspection guide pricesGuide 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.

The steps for a borescope inspection in Porthmadog:

  1. Get in touch

    Online, by phone or WhatsApp.

  2. Your price

    Confirmed in writing before you book.

  3. The visit

    Carried out at an agreed time, with photos of what we find.

  4. Your report

    Plain English, with any follow-on work quoted separately.

Last reviewed 19 October 2026.

Borescope cavity inspection in Porthmadog: questions

Do you cold-call in Porthmadog?

No. We only come out when you have asked us to. If someone cold-calls offering free insulation, check before you agree to anything.

How much does a borescope inspection cost in Porthmadog?

Guide prices are shown on this page, and the price for your Porthmadog property is confirmed before you book.

Do you work on rented homes in Porthmadog?

Yes. Landlords and agents in Porthmadog can book batch visits, and work is arranged around tenants.

Do you cover Porthmadog?

Yes. Porthmadog and the LL49 postcode district are within our Gwynedd coverage, along with nearby Caernarfon and Bangor.

Nearby towns

Book a borescope inspection in Porthmadog

Priced before you book. Findings in writing. No cold calls.