ADU Construction in San Gabriel Behind an Older House
San Gabriel ADU construction with a cool-rated roof suited to an inland lot, colored and shaped to sit with the older main house, and tight details below.
Shingles made with reflective granules, or tile in a cool-rated finish, send back much of the sunlight that would otherwise heat a small building through its roof. For a backyard unit in San Gabriel, we choose one of those coverings in a shade that suits the older main house's roof. Under hard inland sun, the rooms below stay easier to cool, and the unit can run on a modest heat pump. The main house keeps its own roof as it is.
Cool-rated, in a color that fits
Cool roof products are rated for how much sunlight they reflect and how well they shed the heat they do absorb, and the ratings come in colors well beyond white. That lets a unit carry a warm gray shingle or a terra cotta tile beside an older house and still keep its attic cooler. Under the covering, a radiant barrier on the roof deck and insulation sized to the energy code finish the job. Ridge and eave vents keep air moving through a shallow attic, which helps both comfort and the life of the roofing.
Details that last under hard sun
Sun and dry wind wear on the parts around the roof too. Fascia and rake boards are primed on every face, and their joints are sealed with a sealant rated for long UV exposure. Exterior paint is a quality acrylic in a color chosen to fade slowly. Windows on the sunniest walls get low-e glass, and the larger panes go where the eaves can shade them. On the older main house, the original roof, trim and windows are left alone, and the new work stays behind them.
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ADU Construction in San Gabriel: common questions
The meter on the house wall and the panel beside it are where it starts. Totaling the electrical demand of house and unit shows whether that panel can carry a feeder to the unit or has to be replaced, and the trench depth follows the type of conduit used. Water gets a valved branch, and the drain connects at a fresh cleanout after a camera run.
With bracing added, often. An earthquake pushes sideways on a garage, and the long front wall, mostly door opening, has little to resist it. We fill that opening with a framed wall sheathed in plywood, bolt the sill plates to the foundation, and add hold-downs where the engineer specifies. A footing under the slab edge is confirmed before any of it is promised.
Tile profile is the detail to get right beside a tile-roofed house. Barrel, S-shaped and flat tiles read very differently from the yard, so the unit's cool-rated tile follows the shape and color range of the original. On a shingle roof, the shingle weight and tone are matched. Walls, trim and windows take their sizes from the house too.
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Send the details and we will set up a walk-through and a written scope.