Manhattan Beach Windows & Doors Flashed to Shed Water
Manhattan Beach glass doors and windows built with lapped flashing, a raised sill pan and a drain channel so wind-driven rain has nowhere to enter.
Every layer around a new glass door laps over the one beneath it, the way roof shingles do, so water finds no place to run backward. At a Manhattan Beach house the layers are the sill pan, the tape up each jamb, the flashing across the head and the finish over them all. Wind-driven rain on a lot close to the water tests each lap, which is why order matters as much as materials.
From the sill up
The pan under the frame goes in first. It tips outward, turns up at the back and ends, and empties through the face of the wall. Tape runs up each jamb and laps over the pan's edge. The frame is bedded in sealant, leveled and fastened through its flange or jambs. Next the head flashing slides under the weather barrier above and over the frame, so water coming down the wall lands on top of it and runs out to the face. Finish trim and paint seal the edges last.
Where spray and salt come in
On a lot near the water, spray and salt air work on hardware and sealant, so stainless fasteners and sealed corners are the baseline. A threshold with a built-in drain lets the floor continue outside while stray water is led off, clear of the track. A low-e coating goes on the glass for whichever side the wall faces, to keep the afternoon sun comfortable inside. The structure stays as drawn by the engineer: a header sized for the span, posts, footings and shoring while the wall is open.
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Width is set by what the wall holds up. A roof alone allows a long span on one beam, and a floor above or bracing shortens it. Flashing works at any width, but a longer opening has more edge to seal, so the corners and joints get extra attention.
Seal quality varies by system. Sliders give water a few places to enter. Folding walls have many meeting edges, each with a gasket. Pocketing doors need protection where the wall pocket meets the outside. We quote the three and describe where each is most exposed to wind-driven rain.
Load once carried by the old studs moves onto the header. An engineer sizes it, posts support it, and props cover the time between. The flashing above it is lapped over the wall's weather barrier so water from higher up flows across the top. Framing and flashing both get inspected.
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