E2/VM1, 4th edition

E2 External Moisture Verification Method E2/VM1 Fourth Edition provides a compliance pathway for meeting the weathertightness performance requirements of Clause E2.3.2 of the New Zealand Building Code, specifically for cladding systems on buildings up to 10 metres in height. The scope includes wall and roof cladding systems, including junctions with windows, doors, and penetrations, for buildings within the scope of NZS 3604 and designed for wind pressures up to 2500 Pa. It is suitable for residential and similar buildings using drained and vented cavity systems. The verification method outlines detailed test procedures  including static, cyclic, and defect-based water penetration tests. The fourth edition includes updated formatting, consistent structure, and revised definitions.