Updates to the Building Code will make it easier to comply
27 June 2019
Updates to the Building Code will be published on 27 June 2019 following MBIE’s public consultation and analysis of submissions.
Information for COVID-19 Alert Levels in the building and construction sector. Read more
External roof, wall claddings and external openings will prevent external moisture from causing undue dampness or damage.
This clause requires buildings to be constructed to provide adequate resistance to penetration by, and the accumulation of, moisture from the outside.
It contains requirements for roofs, wall claddings and external openings to:
The clause applies to most buildings, as set out in the limit on application in E2.2.
The Acceptable Solution to E2 External Moisture, E2/AS1, is widely used for weathertight design. About E2/AS1 provides a general overview.
Record of amendments is a record of changes to the Acceptable Solutions, Verification Methods and handbooks.
The Building performance team has started work to digitise the Building Code due to growing demands from building professionals who want vital information in a format that is portable, dynamic, feature-rich and digital. We have delivered the first of our Building Code PDF documents (B1, C/AS2, D1 and E2) into our digital reader.
MBIE has historical versions of the code clause documents which can be located under 'Previous Versions' and 'Version History'. Alternatively if you cannot find the document you are looking for, you can send an email with the year and code clause you are after to firstname.lastname@example.org.
Acceptable Solutions and Verification Methods (AS and VMs) were called compliance documents. Some still have the “compliance document” title but the AS or VMs they contain are valid and unaffected by the name change.
Standards are frequently referred to in Acceptable Solutions and Verification Methods. They provide practical information and guidelines for building solutions.
Over 120 building standards used for Building Code compliance are now available for free download.
All standards, including the funded ones, can be accessed through the Standards New Zealand website.
These documents are provided for assistance. They are not intended as a means of establishing compliance with the Building Act or Building Code, and they do not have the same status accorded to Acceptable Solutions and Verification Methods under the Act.
Industry groups can create their own codes of practice for the use of their products. We provide examples to help you.
Determinations are made by MBIE on matters of doubt or dispute to do with building work. Rulings are legally binding in relation to each case. Circumstances in one case may differ to others.
This determination considers whether timber bevel backed weatherboards, painted in a dark colour, complied with Building Code Clause B2 Durability, as it relates to Clause E2 External moisture. The determination considers the degree of exposure to sunlight, acecss for maintenance and inspection of the cladding, the design, and the specification of the materials used, as well as a number of other factors that contribute to a Building Code compliance assessment of this nature.
This determination considers whether an authority was correct to issue a code compliance certificate for a new dwelling. The determination considers whether the building is compliant, and whether the authority would have been aware of any non-compliance when issuing the code compliance certificate.
All products, systems and construction methods that have achieved CodeMark status will be listed here with their most up to date certificate.
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: