How it works
Custom shapes cover everything that is not a rectangle: half rounds, full rounds, octagons, trapezoids, and radius tops that sit above a standard unit. Nearly all of them are fixed glass, because the job of a shaped window is almost always to look right rather than to open.
Where it fits an Inland Empire home
You see them on Spanish revival and custom-built homes across the Inland Empire, where an arched transom over the front door or a radius top above the living room glass is part of the original architecture. The other common job is a repair: a cracked or single-pane original arch that a homeowner wants replaced in the same geometry instead of boxed into a square.
What to watch for
These units are built to your opening and the geometry is not adjustable afterward. A rectangle can be shimmed or trimmed a little, a radius cannot. Field measurement has to be exact, and it is fair to ask who is taking it and how.
Most custom shapes are fixed, so they add nothing to a bedroom’s escape route, and nothing is lost either. What they do add is glass, sometimes in a gable end or above a garage where shading is not practical.
The Climate Zone 10 limits apply the same as on any other window, a U-factor at or below 0.30 and a solar heat gain coefficient at or below 0.23 on most jobs. Accent windows are usually small, so their share of the heat load is modest, but the number still has to be met.
Budget time for the finish work. Stucco and trim have to follow a curve, and a curve takes longer than a straight line.