The window sill rests upon structural framing detailed per architectural plans. Exterior waterproofing relies on a liquid-applied flashing embedded with an L-angle, a break metal trim piece, and a head flashing featuring end dams. Rod and sealant joints occur at exterior weather planes, while interior joints utilize sealant with a one-eighth inch maximum gap. A weather-resistive self-adhering liner wraps the interior substrate alongside self-adhering membrane components.
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