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Dunstable · Bedfordshire

Damp investigation after cavity insulation in Dunstable

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

Book a damp investigation in Dunstable

Covering Dunstable and the LU6 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 Dunstable properties

We cover Dunstable and the LU6 postcode district, including nearby Luton, Leighton Buzzard and Ampthill. It is about 17 miles south of Bedford.

Damp in an insulated Dunstable home is not always the insulation's fault, so the diagnosis comes before any extraction. Where a Dunstable 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.

Wind-driven rain is the first thing the surveyor weighs up. Much of Bedfordshire sits in the more sheltered driving-rain zones of the UK, which widens the choice of fill. Exposed elevations, coastal sites and high ground still get checked wall by wall.

On the rules side, if cavity wall insulation follows in Dunstable, filling a cavity is notifiable building work and needs a building notice or competent-person self-certification.

Rules in England

Filling a cavity is notifiable building work and needs a building notice or competent-person self-certification if insulation work follows.

Sources: Planning Portal: cavity wall insulation and building regulations; 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 Dunstable

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

Guide prices for Dunstable

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 Dunstable:

  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 Dunstable: questions

Is there VAT on a damp investigation in Dunstable?

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 Dunstable?

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

Do you cold-call in Dunstable?

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

Do you cover Dunstable?

Yes. Dunstable and the LU6 postcode district are within our Bedfordshire coverage, along with nearby Luton and Leighton Buzzard.

Nearby towns

Book a damp investigation in Dunstable

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