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Larne · County Antrim

Damp investigation after cavity insulation in Larne

Damp investigation after cavity insulation in Larne is priced before you book, and what we find is written up with photos. 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 Larne

Covering Larne and the BT40 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 Larne properties

We cover Larne and the BT40 postcode district, including nearby Carrickfergus, Newtownabbey and Belfast. It is about 18 miles north of Belfast.

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

Wind-driven rain is the first thing the surveyor weighs up. Parts of County Antrim face some of the heaviest wind-driven rain in the UK, especially exposed coastal and upland sites. Here the survey is stricter: some walls suit only certain certified systems, and some should not be filled at all.

As for paperwork, if cavity wall insulation follows in Larne, inserting cavity wall insulation needs a building control application to the council before work starts.

Rules in Northern Ireland

Inserting cavity wall insulation needs a building control application to the council before work starts if insulation work follows.

Sources: Building Control NI: frequently asked questions; Belfast City Council: what are the building regulations.

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 Larne

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

Guide prices for Larne

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.

The steps for a damp investigation in Larne:

  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 Larne: questions

Do you cold-call in Larne?

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

What will I get from a damp investigation in Larne?

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.

How much does a damp investigation cost in Larne?

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

Do you work on rented homes in Larne?

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

Nearby towns

Book a damp investigation in Larne

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