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External Gutters (Spouting)

NZBC clause B2/AS1 requires spouting to have a durability of 5 years. In practice, this is rarely commercially acceptable. However, with sound design and reasonable maintenance, a spouting life of 10 years or more is usually achieved when using the same material as the profiled metal roof.

Spouting that is difficult to access for replacement should be specified in more durable, compatible materials.

/cop/roof-drainage/types-gutter#external-gutters
Revision Category: 
1 - Minor Errata
Revision Detail: 

Grammar fix.