Damp investigation after cavity insulation for Isleworth properties
We cover Isleworth and the TW7 postcode district, including nearby Hounslow, Heston and Richmond. It is around 9 miles west of London.
If your Isleworth 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 Isleworth properties, so you can choose who fixes them.
Before any material is chosen, exposure is checked. 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.
As for paperwork, if cavity wall insulation follows in Isleworth, 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 Isleworth
- Moisture mapping inside
- Cause and options in writing
- Borescope at affected areas
- External defects check
Guide prices for Isleworth
| Damp investigation after cavity insulation guide prices | Guide 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 Isleworth:
Get in touch
Online, by phone or WhatsApp.
Your price
Confirmed in writing before you book.
The visit
Carried out at an agreed time, with photos of what we find.
Your report
Plain English, with any follow-on work quoted separately.