We are seeing more cases of badly or incorrectly installed cavity wall insulation causing building problems, such as damp and water ingress. The installation problems are historic i.e. more than 10 years ago. This creates 2 problems; firstly, such stories can discourage households installing cavity wall insulation where there is none and secondly, there are significant costs and disruption in removing existing insulation and correcting problems. Does anyone else have these problems any innovative low cost less disruptive fixes?