Insufficient clearance to the finished outside ground levels can result in deterioration of building materials or an increased risk of water entry.
This bulletin outlines the key requirements from E2/AS1 and NZS 3604:2011 Timber-framed buildings to provide adequate clearance between building materials, floor levels and the outside ground or paving levels. It replaces Bulletin 353 Ground clearances.
The bulletin covers:
- what are ground clearances
- problems caused by inadequate ground clearances
- Building Code requirements
- reasons given for inadequate ground clearances
- design and construction requirements
- remedying existing buildings
- claddings below ground
- providing level access.