Guidance on Building Code compliance for retrofitting insulation in external walls
- Valid from
- Information provider
- Ministry of Business, Innovation and Employment
- Information type
- Section 175 guidance
This guidance provides information on the Building Code and Building Act 2004 requirements that relate to retrofitting insulation in external walls of buildings. It highlights the main considerations when assessing work for compliance and lists the relevant Building Code performance criteria for common types of insulation retrofits, such as retrofitting rigid or semi rigid segments and sheet insulation, injected loose fill insulation or injected foam insulation.