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Dyfed · Wales

Damp investigation after cavity insulation in Dyfed

Damp investigation after cavity insulation across Dyfed, priced before you book, with the findings written up and photographed. A damp investigation finds out why an insulated wall is showing damp or mould: rain getting in through defects, bridged or wet fill, debris in the cavity, a breached damp-proof course, or condensation.

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Moisture meter held against a damp, mould-spotted corner of an external wall indoors

Book a damp investigation in Dyfed

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We use your details only to answer this enquiry and arrange your visit, sharing them only with the registered installer we appoint for your job and the providers named in our privacy notice. No marketing lists, no cold calls.

Damp investigation after cavity insulation across Dyfed

We cover 6 towns in Dyfed, including Llanelli, Ammanford, Carmarthen, Aberystwyth, Haverfordwest and more.

Before any material is chosen, exposure is checked. Parts of Dyfed 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.

If your Dyfed installation has a guarantee, we check it first; the guarantee route may cover the work. We never cold-call in Dyfed or anywhere else, and we do not work with doorstep claims companies.

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.

What you get

Moisture readings, borescope photos at the affected areas, an explanation of the likely cause and the options, from simple repairs to partial or full extraction, each priced.

What is included

  • Moisture mapping inside
  • External defects check
  • Borescope at affected areas
  • Cause and options in writing

Damp investigation after cavity insulation prices in Dyfed

Damp investigation after cavity insulation guide prices
Damp investigation after cavity insulation guide pricesGuide price
Damp investigation with borescope£295–£495

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 Dyfed:

  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.

Damp investigation after cavity insulation in Dyfed: questions

Do you cover all of Dyfed?

Yes. We cover 6 towns across Dyfed, including Llanelli, Ammanford, Carmarthen and Aberystwyth, and the villages around them. Island and remote addresses are surveyed by arrangement.

How soon can you visit in Dyfed?

We arrange dates when you get in touch. Availability varies through the year, so we give you real dates rather than a promise on the website.

What will I get from a damp investigation in Dyfed?

A visit at an agreed price, photos of what we find, and a written summary in plain English. Any follow-on work is priced separately so you can choose who does it.

Is there VAT on a damp investigation in Dyfed?

Damp investigation after cavity insulation is not insulation, so it is normally charged at the standard rate of VAT. The VAT treatment is confirmed on your quote.

Damp investigation after cavity insulation in nearby areas

Book a damp investigation in Dyfed

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

Request a price