Pipe penetration through cladding - Build 173(2019)
- Pipe penetration through cladding
- Valid from
- Information provider
- BRANZ Limited
- Information type
- BUILD article
- Website, PDF
It’s important that holes for pipes that penetrate from the building interior through the exterior cladding are constructed in the correct sequence to maintain weathertightness.
All components that penetrate the exterior cladding should be installed before the cladding installation in the right order. This ensures that an interior air seal can be installed and that the penetration can be adequately sealed to the exterior face of the wall underlay. This provides an efficient drainage path for moisture that may get through the cladding assembly and onto the wall underlay.
Following installation of the cladding, all required weather and air seals are installed to ensure the penetration is weathertight.