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Retrofitting insulation to external walls

Guidance to help understand Building Code requirements for retrofitting insulation in external walls.

Guidance on barrier design for Building Code clause B1

Barrier design loading requirements and recommendations for designers, manufacturers and installers of barriers.

Making sure you have safety glass?

Guidance specifying the correct use of safety glass, and why it should be permanently marked.

Roof domes (acrylic or polycarbonate) and potential failure

Roof domes must be designed for the worst effects from weather, plus anticipated people or maintenance loads.

This information is published by the Ministry of Business, Innovation and Employment’s Chief Executive. It is a general guide only and, if used, does not relieve any person of the obligation to consider any matter to which the information relates according to the circumstances of the particular case. Expert advice may be required in specific circumstances. Where this information relates to assisting people: