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Caerphilly · Gwent

Damp investigation after cavity insulation in Caerphilly

Caerphilly homeowners, buyers, landlords and agents can book a damp investigation with the price agreed first. 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.

Book a damp investigation in Caerphilly

Covering Caerphilly and the CF83 district. Tell us about the property. We confirm the price before you book.

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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 for Caerphilly properties

Our Gwent coverage takes in Caerphilly (CF83) and nearby Risca, Newport and Cwmbran. It is about 9 miles west of Newport.

Where a Caerphilly wall does need work, bricks are lifted and rebuilt in matching mortar, and the cavity is checked with a camera before it is closed up. If your Caerphilly installation has a guarantee, we check it first; the guarantee route may cover the work.

Every elevation is judged on its own exposure. Parts of Gwent 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.

In terms of approvals, if cavity wall insulation follows in Caerphilly, 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

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 in Caerphilly

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

Guide prices for Caerphilly

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.

From enquiry to finish in Caerphilly:

  1. Tell us what is happening

    Postcode, property type and what you have noticed.

  2. Price agreed first

    We confirm the price before anyone visits.

  3. Visit and checks

    Photos and readings at the areas that matter.

  4. Findings in writing

    What we found and the options, each priced separately.

Last reviewed 19 October 2026.

Damp investigation after cavity insulation in Caerphilly: questions

Do you cover Caerphilly?

Yes. Caerphilly and the CF83 postcode district are within our Gwent coverage, along with nearby Risca and Newport.

Is there VAT on a damp investigation in Caerphilly?

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.

Do you work on rented homes in Caerphilly?

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

How soon can you visit in Caerphilly?

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.

Nearby towns

Book a damp investigation in Caerphilly

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