What is Rigid Head Flashing (Window Drip Cap)?
Rigid head flashing (RHF) works in conjunction with window flashing, weather resistant barrier (WRB) and the cladding to keep water from finding its way inside a building. RHF is made of steel, aluminum or PVC and is installed on the top, exterior side of a window. RHF is sometimes referred to as a window drip cap, drip edge, cap flashing or z-flashing.
One thing that distinguishes RHF from other flashing is that RHF protrudes past the plane of the window, which helps shed water out away from the face of the glass and window components. Rigid head flashing is available in many different colors at building supply stores or can be made on site with a brake from coil stock.
Read on for tips on how to install rigid head flashing along with some bonus pro tips you won’t find in typical installation manuals.