Tens of thousands of homes across Wales have had insulation ‘retrofitted’ in the last decade as part of a government-led drive to cut energy use.

Because of bad workmanship in cavity wall insulation, hundreds of thousands of properties will have experienced damp issues in their home, here is a list of signs to look out for if you suspect you may be one of these cases.

With cavity wall installation a problem that sometimes can occur is what is known as interstitial condensation. This is were the inner leaf of the wall after insulation becomes much warmer and in fact pushes condensation away from the inner wall. This is because the original design of the building was for it to actually ‘breathe’ and has become too air tight for moisture to pass to escape.