Description

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.

Scope

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?