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Stockton-on-Tees · County Durham

Damp investigation after cavity insulation in Stockton-on-Tees

Damp investigation after cavity insulation in Stockton-on-Tees 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 Stockton-on-Tees

Covering Stockton-on-Tees and the TS18 district. Tell us about the property. We confirm the price before you book.

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Damp investigation after cavity insulation for Stockton-on-Tees properties

Our County Durham coverage takes in Stockton-on-Tees (TS18) and nearby Billingham, Thornaby-on-Tees and Hartlepool. It is around 17 miles south-east of Durham.

If your Stockton-on-Tees installation has a guarantee, we check it first; the guarantee route may cover the work. Defects such as failed pointing, leaking gutters and bridged damp-proof courses are listed and priced separately for Stockton-on-Tees properties, so you can choose who fixes them.

Exposure matters for every cavity wall. County Durham has a mix of moderate and more exposed sites. Hilltop, coastal and west-facing walls take the brunt of wind-driven rain, so the survey records exposure for each elevation before a material is chosen.

For regulations, if cavity wall insulation follows in Stockton-on-Tees, 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.

Common causes we check

Defective pointing, cracked render and porous bricks letting rain in; leaking gutters and downpipes; fill bridging the cavity where mortar droppings or debris have collected; ground levels above the damp-proof course; and condensation from cooking, drying clothes and too little ventilation.

What is included in Stockton-on-Tees

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

Guide prices for Stockton-on-Tees

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 Stockton-on-Tees:

  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 Stockton-on-Tees: questions

Do you cover Stockton-on-Tees?

Yes. Stockton-on-Tees and the TS18 postcode district are within our County Durham coverage, along with nearby Billingham and Thornaby-on-Tees.

How soon can you visit in Stockton-on-Tees?

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 Stockton-on-Tees?

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

Is there VAT on a damp investigation in Stockton-on-Tees?

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.

Nearby towns

Book a damp investigation in Stockton-on-Tees

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