Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, if she will make an estimate of the number of buildings in which insulation was installed through government-funded grant schemes in which remediation of that insulation is required.

The Government does not hold the data on the number of buildings where insulation has been installed through a government funded scheme and subsequently required remediation work.

Since 2019, all installations under government energy efficiency schemes have been required to be carried out by TrustMark registered and PAS 2030 or MCS certified businesses to improve the quality of installations and protect consumers. TrustMark registered installers are required to provide all consumers with a guarantee covering the installation work for up to 25 years for a range of energy efficiency measures.