Description

E2 External Moisture Acceptable Solution E2/AS2 Fourth Edition provides a compliance pathway for meeting the weathertightness performance requirements of Clause E2 of the New Zealand Building Code, specifically for earth buildings.

The scope includes buildings constructed in accordance with NZS 4299, with modifications to address materials, footings, walls, wall openings, and penetrations.

It is suitable for buildings using unstabilised or stabilised earth construction.

The acceptable solution includes specific construction details such as damp-proof courses, soffit junctions, and joinery interfaces.

The fourth edition introduces a standalone format, improved clarity, and updated references and definitions.

Scope

This acceptable solution can be used for the external moisture provisions for earth buildings complying with NZS 4299 as modified by this acceptable solution.

Items outside the scope of this document

Where buildings are based on NZS 4299 but require specific structural engineering design input, the structure must be of at least equivalent stiffness to the provisions of NZS 4299. Such designs are outside the scope of this acceptable solution.