Damp investigation after cavity insulation for New Malden properties
New Malden sits in Greater London, about 9 miles south-west of London. We work across the KT3 district, including nearby Surbiton, Morden and Wimbledon.
Defects such as failed pointing, leaking gutters and bridged damp-proof courses are listed and priced separately for New Malden properties, so you can choose who fixes them. We never cold-call in New Malden or anywhere else, and we do not work with doorstep claims companies.
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.
As for paperwork, if cavity wall insulation follows in New Malden, 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 New Malden
- Moisture mapping inside
- Cause and options in writing
- Borescope at affected areas
- External defects check
Guide prices for New Malden
| 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.
The steps for a damp investigation in New Malden:
Tell us what is happening
Postcode, property type and what you have noticed.
Price agreed first
We confirm the price before anyone visits.
Visit and checks
Photos and readings at the areas that matter.
Findings in writing
What we found and the options, each priced separately.