When Are Properties Unsuitable for Cavity Wall Insulation?
We regularly come across properties that are unsuitable for cavity wall insulation. The following list comprises the most common reasons but it not intended to be exhaustive:
- Properties with elevations that are particularly exposed and susceptible to wind driven rain
- Timber framed properties
- Steel framed properties
- System built properties
- Properties with defective rainwater goods and/or unlined finlock guttering
- Properties where there are significant areas of (require re-pointing) or masonry
- Properties that are experiencing issues with penetrative damp
- Properties without a DPC, or where the DPC is too low (typically less than 125mm from the ground) and a French drain has not been installed
- Some properties with raked mortar joints
- Properties with a cavity wall under 50mm or over 150mm
- Properties that have significant rubble or mortar ingress in the cavity
We are regularly asked to survey properties that exhibit these characteristics which have been filled with cavity wall insulation. The outcome is often that it has become damp and is now causing a range of further problems. In this situation, it is almost certain that the cavity wall insulation will need to be extracted.
It is now apparent that hundreds of thousands of home owners across the UK will need remedial work that will consist of a full extraction of the Cavity Wall Insulation and could well mean a whole host of other repairs and replacements directly caused by the install, costing in excess of £10,000.
Mortgage lenders are also looking at properties which have had CWI installed and can devalue a property by as much as £30,000 if a valid CWI examination certificate is not available.
If you’ve got issues of any nature with your Cavity Wall Insulation that may be down to the installer not following proper guidelines as to the install, contact us for a free, no obligation review.
Contact Wall Cavity Claims today on free phone 0800-8-654321 or visit www.wallcavityclaims.co.uk