ADU Construction in Tarzana
Tarzana ADUs with open metal roof valleys, gutters sized for the flow they carry, metal guards and a noncombustible, tempered-glass exterior.
An L-shaped Tarzana ADU has a roof valley where its two wings meet, and that channel carries more water than any other stretch of the roof while also gathering dry leaves where an ember could settle. We line it with corrosion-resistant metal over a full-length underlayment, keep the shingles trimmed back from its center and lead it into a gutter sized for the extra flow. Noncombustible walls and tempered glass complete the shell.
Lining the valley
An open metal valley stays in plain view, so needles and leaves wash out with the next rain or a hose. Where the parcel is mapped, code calls for corrosion-resistant metal over an underlayment running the valley's full length, and we detail it that way on every unit. Where the valley ends at the eave, a diverter keeps the rush of water from overshooting the gutter. A simple roof shape, with as few valleys as the plan allows, keeps the count of these channels low and the roof easier to keep clean.
Past the gutter
The gutter under a valley outlet takes a heavier load than the rest, so it gets a larger downspout or a second one close by. Each downspout discharges onto a splash block or into solid pipe running away from the slab to a planted area or the street, as the department allows. Metal guards keep the troughs from filling with debris that could smolder. LADBS reviews the drainage notes on the site plan, and if the yard falls toward a neighbor we turn the outlets back onto your lot.
ADU Construction in Tarzana: common questions
Tarzana work is permitted by LADBS, and once the state's fire map takes in a parcel, the wildfire provisions apply, metal roof valleys included. Our Tarzana units are specified that way on every lot, so an unmapped parcel gets the same valleys, vents, eaves and tempered glass as a mapped one.
LADBS gets a roof plan from us for a Tarzana unit that marks the valley, every slope arrow and each outlet, plus a site plan tracing the discharge pipes across the yard. The package is sized for a single-story unit that qualifies.
With the house and unit designed together, their roofs can be shaped to avoid extra valleys and to drain toward the same collection points. LADBS issues a permit for each, and we sequence footings and trenches so drainage lines for both go in while the ground is open. We check setbacks first to confirm the pair fits.
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More work we do in Tarzana
Plan your project in Tarzana
Tell us about the house and the adu construction work. We reply about a walk-through and a written scope.