Defect Category
Services & Drainage
Technical guidance covering stormwater drainage deficiencies, downpipe defects, inadequate drainage design and pipe penetration failures in Class 2 residential buildings.
Blocked & Undersized Stormwater
Stormwater drainage system failure from blocked pipes, undersized infrastructure and inadequate maintenance.
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Downpipe Defects
Leaking, cracked, blocked or incorrectly terminated downpipes causing water damage to the building envelope.
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Inadequate Drainage Design
Deficiencies in the hydraulic design of stormwater systems leading to surcharging, ponding and overflow.
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Pipe Penetration Failure
Water ingress at service pipe penetrations through slabs, walls and roofs from failed seals and collars.
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