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Wallington · Greater London

Damp investigation after cavity insulation in Wallington

Wallington homeowners, buyers, landlords and agents can book a damp investigation with the price agreed first. 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.

Book a damp investigation in Wallington

Covering Wallington and the SM6 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 Wallington properties

If your property is in Wallington or the SM6 district or nearby Carshalton, Sutton and South Croydon, it is within our Greater London coverage. It is roughly 10 miles south of London.

Defects such as failed pointing, leaking gutters and bridged damp-proof courses are listed and priced separately for Wallington properties, so you can choose who fixes them. Where a Wallington 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.

Local weather affects which walls can be filled. Much of Greater London 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 compliance, if cavity wall insulation follows in Wallington, 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 Wallington

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

Guide prices for Wallington

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.

From enquiry to finish in Wallington:

  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 Wallington: questions

How soon can you visit in Wallington?

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.

How much does a damp investigation cost in Wallington?

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

Is there VAT on a damp investigation in Wallington?

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 Wallington?

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

Nearby towns

Book a damp investigation in Wallington

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