San Marino ADU Construction With a Wall of Glass

San Marino ADU construction with thermally broken aluminum glass walls, low-e panes and a shaded patio facing open yard, from Palmcrest Contractors.

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Thermally broken aluminum is the frame we propose for the folding glass wall of a San Marino ADU. An insulating strip inside each profile keeps hard inland sun from turning the frame into a heater, the metal will not swell, warp or rot, and narrow sightlines leave more of the opening as glass. Paired with low-e panes and a deep eave, the frame lets the main room open to its patio without overheating.

Siting the unit for light and quiet

State ADU law sets the ground rules on a San Marino parcel, and the city applies them address by address in this suburban corner of the San Gabriel Valley. We start by taping the yard and marking which main house windows face it. The unit then goes where its glass wall looks onto its own patch of yard, with solid walls or high clerestory windows toward the main house and the fences. Trees we want to keep get their root zones marked, so footings stay clear of them.

Materials that hold up outdoors

Around the frame, the shell is chosen to age well under hard sun and dry wind. Cement plaster with integral color needs no repainting, a light-colored roof reflects heat, and a patio of concrete pavers set on a compacted base stays flat and cool underfoot. A pergola in powder-coated aluminum or treated wood shades the door. Each choice is written into the drawings, and construction is quoted separately from the plans once we have walked the lot. Gutters in a matching finish complete the roof edge.

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