Verification Method B2/VM1: Durability Evaluation
- Second edition, Amendment 12
- Valid from
- Information provider
- Ministry of Business, Innovation and Employment
- Information type
- Verification Method
Verification Method B2/VM1 provides a means of compliance with Building Code Clause B2 Durability.
Building Code Clause B2 confirms the use of materials that will remain functional for the minimum periods specified (5, 15 or ≥50 years).
B2 Durability must always be considered when demonstrating compliance with each of the clauses of the Building Code. In other words, it ensures that a building will continue to satisfy the performance of the Building Code throughout its specified intended life.
Under the clause, building materials, components and construction methods are required to be sufficiently durable. They must ensure that the building, without reconstruction or major renovation, continues to satisfy the other functional requirements of the Building Code throughout its life. B2 specifies minimum durability periods building elements must meet with only normal maintenance, being not less than 50, 15 or 5 years.