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Northamptonshire · England

Damp investigation after cavity insulation in Northamptonshire

Damp investigation after cavity insulation across Northamptonshire, priced before you book, with the findings written up and photographed. 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.

Moisture meter held against a damp, mould-spotted corner of an external wall indoors

Book a damp investigation in Northamptonshire

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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 across Northamptonshire

We cover 7 towns in Northamptonshire, including Northampton, Corby, Kettering, Wellingborough, Rushden and more.

Exposure matters for every cavity wall. Much of Northamptonshire 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.

Damp in an insulated Northamptonshire home is not always the insulation's fault, so the diagnosis comes before any extraction. If your Northamptonshire installation has a guarantee, we check it first; the guarantee route may cover the work.

Building Regulations in England

Filling an existing cavity wall is notifiable building work in England. Either a building notice goes to building control before the work, or the installer self-certifies it through a government-approved competent person scheme such as CIGA's CWISC scheme. The insulation used must also be suitable for the wall it goes into, which is why the survey checks construction, condition and exposure first.

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

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

Damp investigation after cavity insulation prices in Northamptonshire

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 Northamptonshire:

  1. Get in touch

    Online, by phone or WhatsApp.

  2. Your price

    Confirmed in writing before you book.

  3. The visit

    Carried out at an agreed time, with photos of what we find.

  4. Your report

    Plain English, with any follow-on work quoted separately.

Last reviewed 19 October 2026.

Damp investigation after cavity insulation in Northamptonshire: questions

Do you cover all of Northamptonshire?

Yes. We cover 7 towns across Northamptonshire, including Northampton, Corby, Kettering and Wellingborough, and the villages around them. Island and remote addresses are surveyed by arrangement.

How much does a damp investigation cost in Northamptonshire?

Guide prices are shown on this page, and the price for your Northamptonshire property is confirmed before you book.

Do you cold-call in Northamptonshire?

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

How soon can you visit in Northamptonshire?

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.

Damp investigation after cavity insulation in nearby areas

Book a damp investigation in Northamptonshire

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