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Cardiff · South Glamorgan

Cavity wall suitability survey in Cardiff

Before anyone drills in Cardiff, the walls are checked properly. The survey is free with an install quote; standalone reports are priced first. A cavity wall survey checks whether your walls can safely be filled and with what.

Book a survey in Cardiff

Covering Cardiff and the CF10 district. Free with an install quote; standalone reports are priced before you book.

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Cavity wall suitability survey for Cardiff properties

If your property is in Cardiff or the CF10 district or nearby Penarth and Barry, it is within our South Glamorgan coverage. Cardiff is one of the main towns we cover in South Glamorgan.

Every inspection point in Cardiff is photographed and logged, so you have a record to show a buyer, lender or contractor. Where a Cardiff wall shows cold patches or damp, the survey targets those areas first rather than sampling at random.

Before any material is chosen, exposure is checked. Parts of South Glamorgan 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, in Cardiff 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 Cardiff

  • Cavity width and debris check
  • Repairs list where needed
  • Fixed install price where suitable
  • Exposure assessment by elevation

Guide prices for Cardiff

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 Cardiff:

  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 Cardiff: questions

Do you work on rented homes in Cardiff?

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

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.

Do you cover Cardiff?

Yes. Cardiff and the CF10 postcode district are within our South Glamorgan coverage, along with nearby Penarth and Barry.

Is my Cardiff home too exposed for cavity insulation?

Parts of South Glamorgan get some of the heaviest wind-driven rain in the UK, so the survey is stricter and some walls are better left unfilled. The survey records the exposure of each wall before recommending a material, or recommending against filling.

Nearby towns

Book a survey in Cardiff

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