The UK government’s recent proposals to update the building regulations are not good enough, industry says. They could lead to double the heat loss compared to current industry best practice, and will lead to more expensive construction to meet our energy and emissions targets.

The new PAS 2035 standard defines a risk-based approach to safe and efficient domestic renovation for low energy housing. We look at the airtightness impacts.

This is the second instalment of our guide running from concept to handover, what needs to happen at each RIBA stage to achieve a successful airtightness test.