ADU Construction in San Fernando
San Fernando ADUs with a Class A roof, metal gutters and guards, and downspouts led to a gravel planter, inside a fire-rated exterior shell.
Downspouts on a San Fernando backyard unit can empty into a gravel-filled planter set a few feet off the wall, where roof water soaks into the ground slowly and nothing that burns grows against the siding. The roof above is pitched toward that planter, with a metal gutter and a leaf guard along its low edge. Noncombustible cladding, tempered glass and screened vents finish the shell.
From the roof to the planter
The roof covering is a Class A product over an underlayment lapped from the eave upward, so water crossing any joint meets the upper layer first. A metal drip edge carries the last of it into the gutter, which falls gently to an outlet at one corner. From there a downspout drops into the planter onto a splash block. The planter is sized for the roof area it serves, lined to keep water away from the slab and filled with rock and river stone, so it can take a hard storm without spilling back toward the house.
Review at the city
San Fernando's building department reviews the drawings, and the grading and drainage notes show where roof water ends up on the lot. A planter or dry well has to sit clear of the foundation and the property line, and if the lot slopes toward a neighbor the outlet is turned to keep water on your side. We size each piece against the roof and draw an overflow route for a storm that exceeds it. Gutter guards in metal keep dry leaves from piling up where a drifting ember could land.
ADU Construction in San Fernando: common questions
A mapped parcel answers yes. The City of San Fernando can confirm whether an address falls within a fire hazard severity zone. Our San Fernando units carry the wildfire assemblies whether or not it does: a rated roof, metal gutter guards, enclosed eaves, tempered glass and vents that screen out embers, so reading the map rarely changes the drawings.
Pitch, gutter line and outlet appear on the roof framing plan for a San Fernando unit, and the site plan carries the water from there to the drainage planter, so a reviewer can follow the route end to end. The package suits a qualifying one-level unit.
Rebuilding the house alongside the unit lets one drainage plan cover both roofs, with outlets led to planters or a shared dry well. San Fernando reviews each building, and we arrange the drawings so the unit's grading matches the house pad. Whether the two can move together depends on lot size and setbacks, which we check first.
ADU Construction in other cities
More work we do in San Fernando
Plan your project in San Fernando
Tell us about the house and the adu construction work. We reply about a walk-through and a written scope.