Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what steps he is taking to promote limestone insulation as an energy efficiency measure.

The government does not promote one measure over another, instead energy efficiency measures installed under current Government energy efficiency schemes must be compliant with PAS 2035/2030 to ensure installations are done to the highest quality and the risk of unintended consequences, such as condensation or damp, are minimised.