Bathroom Remodeling in Altadena, CA
Old knob-and-tube wiring retired, a new circuit, county permits and a tested shower membrane before tile goes on.
Knob-and-tube wiring sometimes still feeds the light over a bathroom mirror, tucked into a wall cavity nobody has opened in a long time. When the plaster comes off in an Altadena bathroom and those porcelain knobs appear, the plan shifts. The old run is retired back to the panel, and the room gets its own 20-amp circuit with ground-fault protection before any insulation, backer board or tile can go in.
Retiring the old wire
Old cloth-insulated conductors were never meant to sit in a wet room, and some were spliced into newer cable by whoever worked on the house before. Each wire is followed back to where it starts with a voltage meter, marked live or dead, and cut off at the panel. New cable then runs through bored studs to fresh boxes for the vanity light, the receptacles and the exhaust fan. Every receptacle near the sink gets ground-fault protection. The inspector sees the new wiring while the wall is still open, and only after that sign-off is the cavity closed.
County permit, ember-aware exterior
Altadena is unincorporated, so the bathroom permit is filed with Los Angeles County, and county inspectors make each visit from rough plumbing and wiring through the final. Some Altadena parcels fall within mapped fire hazard zones, which matters only where the job reaches outdoors. A fan duct ending at an exterior wall would get a metal hood with a fine mesh screen, and a new window over the tub could call for tempered, dual-pane glass. Sound original pieces, such as a mirror frame or a built-in linen cupboard, are listed in the scope to stay.
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Bathroom Remodeling in Altadena: common questions
Several layers can sit below the tile: a thick mortar bed reinforced with wire lath, then plank or tongue-and-groove boards, then the joists. Galvanized supply pipe and a cast iron drain may run through that space. Dark, soft wood near the toilet flange points to an old seep, and the scope records each repair it needs.
It can stay if the enamel and the shell are both sound. A cast iron tub is heavy enough that leaving it in place is often easier on the house, so it is wrapped and shielded during demolition. It gets a new drain, overflow and valve, and the walls around it are rebuilt with fresh backer and membrane. Chipped enamel can be resurfaced on site.
Our shower walls and floor get a continuous membrane, lapped onto the curb and sealed to a drain with a bonding flange. Seams, inside corners and the valve opening are reinforced. Before any tile is set, the pan is plugged and filled, and the water line is marked and checked the next day. A drop sends us back to find the leak.
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