San Marino Windows & Doors in a Sound Bay
San Marino bay window work that checks the joists or brackets under the bay and the small roof over it before any new sash is measured or ordered.
A projecting bay window rests on framing you cannot see from the room. Floor joists may run out past the wall to carry it, or brackets may hold it from below, and a small roof caps it. If those joists soften or the brackets loosen, the bay tips outward and its sashes bind. On a San Marino house with a bay, we check under it and over it before pricing glass, since what turns up there decides the work.
Under the bay and on its roof
From the crawlspace, or through a panel in the soffit under the bay, we probe the joist ends that reach past the foundation and look at how they meet the rim. Wood that has stayed firm needs nothing. A soft end can be sistered with new lumber bolted alongside, and a bracket that has pulled loose is refastened into solid framing. Up top, the joint where the bay roof meets the main wall is a likely leak point, so its step flashing and counterflashing are opened and checked. A level laid across the bay seat shows how far the whole thing has dropped.
Windows set into a level bay
Once the bay is level again, the openings are measured, since a racked bay gives false sizes. The angled corner posts between the front and side units are part of the look, and we keep their width, so new units are ordered as separate frames joined at those posts. Where the original sashes are sound, they go back on new cords after the frame is trued, and the window seat and stool inside are kept or remade to the same profile. The little roof over the bay gets fresh flashing before its head trim goes back on.
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Sashes in a bay often bind because the bay itself has moved, so we fix the framing first and try them again. Many then slide freely and can be restored with new putty and cords. A sash with soft rails, or one that still sticks after the bay is level, is a candidate for a new unit made to the same size.
Seen from the street, the corner posts of a bay carry most of its line. We measure each post face and the sash rails on either side, then order units whose frames leave those posts at their original width. Divided panes are copied pane for pane, and the outside casing that framed the bay is refitted.
The City of San Marino reviews permits for this kind of work. Sistering joists or refastening a bay counts as structural repair and is inspected before the soffit closes, and new units carry energy labels for review. Where design review may apply to a change visible from the street, we ask the city before ordering.
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