New Zealand · Verification Method
G4/VM1: Ventilation verification method
Verification Method for demonstrating ventilation performance under clause G4 of the New Zealand Building Code.
- Edition
- Fifth edition · effective 28 July 2025
- Search coverage
- 7 of 7 PDF pages
Ventilation
Open original PDF at page 1 Source wording and page order preserved. Drawings and table layouts remain available in the original PDF.
G4
G4 Ventilation
Verification Method G4/VM1
Ventilation rate and air purity
FIFTH EDITION | EFFECTIVE 28 JULY 2025
Edition and local adoption determine which requirements apply. Use the publisher’s document for the complete clauses, diagrams and amendments.