Water is not reliably directed around and out of a wall opening.
A delayed musty odor was traced through an exterior-wall cavity rather than the visible window seal.
Windows depend on layered laps, head flashing and sill drainage. Surface sealant cannot replace a broken route behind the cladding.
Both can wet openings, but entry location and wall drainage behavior differ.
Glazing, frames, seals, flashing, thresholds and hardware within openings.
A narrow stain descends from one lower corner of a window.
Wallboard feels soft or crushes below an opening.
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