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Morden · Greater London

Damp investigation after cavity insulation in Morden

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

Book a damp investigation in Morden

Covering Morden and the SM4 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 Morden properties

We cover Morden and the SM4 postcode district, including nearby Mitcham, Wimbledon and Carshalton. It is around 8 miles south of London.

We never cold-call in Morden or anywhere else, and we do not work with doorstep claims companies. If your Morden installation has a guarantee, we check it first; the guarantee route may cover the work.

Exposure matters for every cavity wall. 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.

In terms of approvals, if cavity wall insulation follows in Morden, 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 Morden

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

Guide prices for Morden

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 Morden:

  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 Morden: questions

What will I get from a damp investigation in Morden?

A visit at an agreed price, photos of what we find, and a written summary in plain English. Any follow-on work is priced separately so you can choose who does it.

Do you cold-call in Morden?

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.

How much does a damp investigation cost in Morden?

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

Nearby towns

Book a damp investigation in Morden

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