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Holloway · Greater London

Damp investigation after cavity insulation in Holloway

For properties in Holloway, a damp investigation starts with a clear price and ends with a written record of what was found and done. 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 Holloway

Covering Holloway and the N7 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 Holloway properties

If your property is in Holloway or the N7 district or nearby Highbury, Archway and Camden Town, it is within our Greater London coverage. It is roughly 3 miles north of London.

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

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.

For regulations, if cavity wall insulation follows in Holloway, 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 Holloway

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

Guide prices for Holloway

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 Holloway:

  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 Holloway: questions

How soon can you visit in Holloway?

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.

Do you cold-call in Holloway?

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 work on rented homes in Holloway?

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

How much does a damp investigation cost in Holloway?

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

Nearby towns

Book a damp investigation in Holloway

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