Inappropriate cavity wall insulation in homes has become “a scandal”, a Welsh MP has said.
Arfon MP Hywel Williams claimed millions of homes had the insulation installed by successive government-backed schemes which has led to damp, mould and condensation.
He called on the UK government to take responsibility for the “dreadful mess”.
The UK government said it was committed to ensuring consumers are protected.
The Welsh Government said it has been working with partners, including the UK government, to address the issues and improve the system.
The insulation is meant to make homes warmer and more energy efficient but if installed incorrectly, or in unsuitable properties, it can lead to damp.
Driving rain is also a problem, especially in Wales.
