Q: I have read your recent advice about cavity wall insulation (CWI) with great interest. I had it installed three years ago. I am now experiencing all the problems people have written to you about – damp internal walls, staining, condensation and black mould. I phoned the installers three times, and they never returned my calls, so I contacted CIGA (Cavity Insulation Guarantee Agency).
CIGA says the dampness in my house has nothing to do with the cavity insulation. They say it is due to poor pointing, damage to areas of timber panelling and the lack of a “weather seal” under a first-floor balcony door. The condensation and mould growth are apparently due to a lack of ventilation, “and entirely a product of the home environment”.
It looks as if I will have to pay someone else to remove the insulation. Any help would be much appreciated.
