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Colwyn Bay · Clwyd

Damp investigation after cavity insulation in Colwyn Bay

Colwyn Bay 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 Colwyn Bay

Covering Colwyn Bay and the LL29 district. Tell us about the property. We confirm the price before you book.

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Damp investigation after cavity insulation for Colwyn Bay properties

Colwyn Bay is among the towns we cover in Clwyd, alongside Rhyl and Flint. It is around 35 miles north-west of Wrexham.

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

Every elevation is judged on its own exposure. Parts of Clwyd 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.

On compliance, if cavity wall insulation follows in Colwyn Bay, filling a cavity is notifiable work under the Building Regulations as they apply in Wales, usually self-certified through a competent person scheme.

Rules in Wales

Filling a cavity is notifiable work under the Building Regulations as they apply in Wales, usually self-certified through a competent person scheme if insulation work follows.

Sources: Welsh Government: building work competent person schemes; 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 Colwyn Bay

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

Guide prices for Colwyn Bay

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.

What happens next for a Colwyn Bay property:

  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 Colwyn Bay: questions

Do you work on rented homes in Colwyn Bay?

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

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.

Do you cold-call in Colwyn Bay?

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

Is there VAT on a damp investigation in Colwyn Bay?

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 Colwyn Bay

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