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Llanelli · Dyfed

Cavity wall suitability survey in Llanelli

Llanelli properties get a written survey result: suitable, suitable after repairs, or not suitable. A cavity wall survey checks whether your walls can safely be filled and with what.

Book a survey in Llanelli

Covering Llanelli and the SA15 district. Free with an install quote; standalone reports are priced before you book.

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Cavity wall suitability survey for Llanelli properties

Llanelli is among the towns we cover in Dyfed, alongside Ammanford and Carmarthen. It is roughly 14 miles south-east of Carmarthen.

A survey in Llanelli gives you facts before anyone drills: what the wall is, what is in the cavity and whether it is sound. Where a Llanelli wall shows cold patches or damp, the survey targets those areas first rather than sampling at random.

Exposure matters for every cavity wall. 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, in Llanelli 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 the surveyor checks

Wall construction and thickness at window reveals; cavity width and debris with a borescope; brickwork, pointing, render, sills, gutters and downpipes; signs of damp inside and out; air bricks and flues; joins with neighbours and extensions; and the exposure of each elevation to wind-driven rain.

What is included in Llanelli

  • Photo-backed written result
  • Fixed install price where suitable
  • Repairs list where needed
  • Cavity width and debris check

Guide prices for Llanelli

Cavity wall suitability survey guide prices
Cavity wall suitability survey guide pricesGuide price
Suitability survey with an install quoteFree
Standalone survey report (no install quote)£145–£245

The survey is free with an install quote. A standalone report is not insulation, so it is normally standard-rated for VAT; guide prices include VAT. 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 cavity wall survey in Llanelli:

  1. Tell us about the property

    Postcode, property type and why you need the survey.

  2. Survey visit

    Walls, cavity, condition and exposure checked and photographed.

  3. Written result

    Suitable, suitable after repairs, or not suitable.

  4. Fixed price if you want work

    The survey is free when it is for an install quote.

Last reviewed 19 October 2026.

Cavity wall suitability survey in Llanelli: questions

How soon can you visit in Llanelli?

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.

Do you cover Llanelli?

Yes. Llanelli and the SA15 postcode district are within our Dyfed coverage, along with nearby Ammanford and Carmarthen.

Do you cold-call in Llanelli?

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

Will you tell me if I do not need any work?

Yes. If the findings show nothing needs doing, or a cheaper fix such as clearing a gutter will do, we say so.

Nearby towns

Book a survey in Llanelli

Free with an install quote. Written result for every wall.