BlockFlash cuts installation time associated with using membrane flashing in a multi-wythe course by approximately 50 percent, product developers note, and eliminates the need for multiple architectural CMU sizes typical with through-wall flashing
. The 6-in.
Staining or detectable moisture at interior drywall soffits, blind pockets, lay-in ceiling tiles, and above windows and doors can indicate defective through-wall flashing
in clay brick and concrete masonry cavity walls.
In clay brick and concrete masonry cavity wall construction, this could indicate defects in the through-wall flashing
above the windows and doors rather than defects in the window and door products themselves, a common source of misdiagnosis.
Repairs can range from tuckpointing to installation of a properly designed through-wall flashing
An engineering inspection before the project began revealed that the original terracotta facade had no provisions for through-wall flashings
, allowing water to penetrate and accumulate inside the facade.