Room Additions in Alhambra
Alhambra room additions with roof drainage, flashing and footing protection planned together, so water from the new roof has a clear path away from the house.
Where the roof of a new room sends its water is settled on paper in Alhambra long before any framing goes up. A downspout with nowhere to go ends up emptying beside a footing, and soil that stays wet beside a foundation shifts under it. So the drainage plan is drawn alongside the structure: gutter size, downspout locations and a path that carries the flow away from both the old and the new foundation.
From the new roof to the street
A bigger roof gathers more water in a storm, and that water has to travel somewhere. Gutters feed downspouts, downspouts feed leaders or splash blocks, and the final stretch should slope away from the house across the yard or into a drain line. We set those pieces so none of them discharges within reach of the footing. If the side yard is narrow, the route may follow it, so the plans trace the path before the roof goes on. Drawing it first also tells the engineer whether any water will land near the new footing.
Flashing where old meets new
The line where the new roof meets the old wall is where water tests the work. Step flashing is woven into the courses of roofing, a metal diverter turns the flow into the gutter and the wall membrane laps over the flashing like shingles on a roof. The sequence matters more than the materials, since each layer sheds onto the next and water follows the surface down and out. We photograph the layers before siding goes over them. Those photographs go in the project file for the inspector and for you.
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Room Additions in Alhambra: questions
The footing is the limiting piece here. The engineer checks its size and condition and compares it with the load of the added story. If the numbers fall short, the plans add support under the existing walls or new braced panels, and that work happens before the upper floor starts. A path for storm water away from the footing is checked at the same time.
Floor joists of the new room are fastened to a ledger or sit beside the old joists so floor levels line up. At the roof, flashing and a water barrier are laid so water sheds over each seam. We open only the strip needed, and the inspector can see the connection before anything covers it.
It can pay off to look. The engineer checks the old anchor bolts, any cripple walls and the way the garage door opening is braced. Fixes can be drawn into the same permit, and since the ground around the foundation is already dug, access is easy. You get the addition priced alone and with the extras, then choose.
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Describe the house and what it needs. We look at the structure first and send the quote in writing.