Altadena Windows & Doors for County Review
Altadena window and door replacement prepared for Los Angeles County plan check, with the glazing schedule, header details and labels the reviewer reads.
For an unincorporated community like Altadena, window and door permits are handled by Los Angeles County Building and Safety, and its plan checker reads the glazing schedule line by line. State fire hazard maps cover parts of Altadena, and a lot they take in may face ember-resistance rules for exterior glass. The same review covers headers over any widened opening, safety glass near doors and the energy label of each unit.
The glazing schedule
On a mapped lot, every exterior window and glass door on the schedule is listed as multipane glazing that includes a tempered pane, as glass block, or as a unit with a tested fire rating. A separate column marks the panes that count as safety glazing because of where they sit, such as beside a door, by a tub or close to the floor. The delivered units must carry labels that agree with that schedule, so the county inspector can confirm them on site. Any vent inside the same scope is listed as an ember-resistant vent product.
Framing drawings and inspections
Widening an opening for a slider puts a framing detail on the plan set: the header size for the span, a post at each end and the path the load follows to the footing. Spans past what the prescriptive tables cover get an engineer's stamp. If the lot slopes and the wall sits on the downhill side, the floor framing under it may be drawn too. The county inspector sees framing and flashing before stucco covers them, then returns for a final visit to read labels and test each lock.
About our windows & doors workEverything we build in Altadena
Windows & Doors in Altadena: questions
In most cases, with a header sized to the new span and posts that bring its load down to solid bearing. The county wants that framing drawn, and an engineer checks a long span. On a mapped lot, the slider's glass also has to meet the ember rule, which narrows the choice of doors before the opening is sized.
If the parcel is inside a mapped fire hazard zone, exterior windows may need multipane glass with a tempered pane in the unit, or glass block, or a unit with a 20-minute fire rating. A tempered single pane does not comply, and neither does dual glazing with no tempered layer. Safety glass near doors and an energy label apply on every lot.
Full-frame replacement is the fix once water gets in. An insert keeps the old frame and the flashing that let water through. Removing the whole unit opens the wall so wet framing can be replaced and a new pan and tape fitted, and a mapped lot gets glass that meets the ember rule in the same step. A sound, dry frame may still take an insert.
Windows & Doors in other cities
Planning work in Altadena?
Tell us about the lot and the job. A builder replies by phone or email to set up a visit.