Description

From 1 May 2023, housing and small buildings up to 300 m² will need to be better insulated.

These changes only affect new construction or existing properties undergoing changes to the external thermal envelope, which will require a building consent. Retrofit insulation standards are not included in the update.

This article focuses on the schedule method for compliance. Use of the calculation or modelling methods may be a better way to optimise thermal performance.

What does this mean in practice for wall, underfloor and ceiling insulation of these buildings when using the schedule method for compliance?

Scope

This article includes:

• Construction R-values in H1
• What do the changes mean?
  • Walls
  • Floors
  • Ceilings
• What type of product can I use?
• Where should you go for answers?