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Haverfordwest · Dyfed

Damp investigation after cavity insulation in Haverfordwest

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. In Haverfordwest the visit is priced up front, and any follow-on work is quoted separately so you can choose.

Book a damp investigation in Haverfordwest

Covering Haverfordwest and the SA61 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 Haverfordwest properties

Haverfordwest sits in Dyfed, roughly 29 miles west of Carmarthen. We work across the SA61 district, including nearby Pembroke Dock, Carmarthen and Llanelli.

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

Local weather affects which walls can be filled. 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.

On the rules side, if cavity wall insulation follows in Haverfordwest, 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.

Common causes we check

Defective pointing, cracked render and porous bricks letting rain in; leaking gutters and downpipes; fill bridging the cavity where mortar droppings or debris have collected; ground levels above the damp-proof course; and condensation from cooking, drying clothes and too little ventilation.

What is included in Haverfordwest

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

Guide prices for Haverfordwest

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.

The steps for a damp investigation in Haverfordwest:

  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 Haverfordwest: questions

Do you cold-call in Haverfordwest?

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

What will I get from a damp investigation in Haverfordwest?

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.

Do you cover Haverfordwest?

Yes. Haverfordwest and the SA61 postcode district are within our Dyfed coverage, along with nearby Pembroke Dock and Carmarthen.

Is there VAT on a damp investigation in Haverfordwest?

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.

Nearby towns

Book a damp investigation in Haverfordwest

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