Room Additions in Burbank, Wired for the Old House
Room additions in Burbank that deal with knob-and-tube wiring, galvanized pipe and notched framing in the old house before the new walls tie in.
Cloth-wrapped wire on porcelain knobs inside an attic or a wall cavity changes what a Burbank addition has to include. Knob-and-tube circuits carry no ground conductor and were never meant to sit under insulation, so any that feed the rooms beside the new walls get replaced before the connection is made. Finding them early lets the written scope say so, with a panel and new home runs sized to match, and keeps surprises out of the middle of framing.
Wiring found behind old plaster
A flashlight in the attic and a look inside the panel tell most of the story. Where original conductors are cloth-covered and spliced in several places, the circuits serving the room next to the new wall are replaced with grounded cable, and the plaster is opened only in the strips that cable needs. Switch boxes and the trim around them stay in place where they can. The panel is checked for open space and rating, because new rooms add load the old service was never sized for. Any change to the service is drawn on the permit set and inspected before walls close.
Pipes and framing in the same cavity
Wiring seldom hides alone in an old wall. Galvanized supply pipe narrows from the inside as mineral scale builds, so a new bath or laundry in the addition gets copper or PEX run from a point where the old line is still clear, and the remaining old pipe is noted for later. Framing at the joint is checked for notches cut by earlier trades for pipe and wire. A notched stud or joist that carries load is sistered with new lumber before the addition ties in, and the sheet showing this goes to the Burbank building department with the rest of the drawings.
Room Additions in Burbank: common questions
Older houses carry deep casings, wide sills and tall baseboards that stock lumber rarely matches, so new trim is cut to match a sample taken from the old. Each siding course is measured and the roof takes the original pitch. Salvaged boards from the opening are rehung on the wall seen from the street.
Maybe, and wiring and pipes are only part of the check. An engineer reads the footings, the bracing and the load a new floor would put on the lower walls. Shortfalls are closed with added footing, posts, steel hold-downs or sheathed shear walls, and the fix is written into the scope before work is priced.
New lumber is lapped and bolted to old members, and an engineer specifies the nails, plates and hardware. Old joists shallower than the new ones get sistered or hung from a ledger so the floors meet at a common height. Rafters are tied across the joint so the roof reads as a single plane.
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