Knock it on the head - Build 171(2019)
- Knock it on the head
- Valid from
- Information provider
- BRANZ Limited
- Information type
- BUILD article
- Website, PDF
Head flashings are a critical element when it comes to detailing and installing windows.
In terms of the 4Ds of water management – deflection, drainage, drying and durability – head flashings provide:
- a drainage function, allowing water on the back of the cladding to drain out at the window head
- a deflection function by diverting water away from the top of the window.
This article includes the following parts:
- Two options for head flashings
- Size of gap queried
- Option 1 – firm fit
- Option 2 – downturn projected forward
- A tight fit
- What else?