Room Additions in Sunland-Tujunga
Room additions in Sunland-Tujunga begin with the attic: roof framing type decides how a new room joins the old house. Aspenwell Construction.
Whether the existing roof was built with rafters or with factory trusses changes every decision about a Sunland-Tujunga addition. Rafters can be tied into, while trusses cannot be cut without an engineer's repair. We find out in the attic before drawings begin, because the answer sets the tie-in, the beam sizes and how much of the old roof comes off.
Rafters, trusses and the seam
In an attic with rafters and a ridge board, a new roof can often be lapped into the old one with added ties and a beam where the wall comes out. Trusses carry load through their web members, so cutting one weakens the whole line. The engineer then draws a repair, or the new room gets its own roof framed beside the old. Either way the reading comes first. We also look at ceiling joist size and any old cuts for pipes or ducts.
Where parts of the lot face fire rules
Fire hazard maps cover portions of Sunland-Tujunga, so ember-resistance rules could apply to the roof edge of a lot there. Vents listed for ember resistance, noncombustible gutters and sealed eaves are typical items the building department can require. If the lot slopes, the footing plan and the drainage path are drawn around that grade. Whatever is found in the attic goes into the permit set, so the reviewer sees the same roof we do. Roof edges are detailed with that rule in mind from the first sketch.
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Room Additions in Sunland-Tujunga: questions
Only the engineer can answer, after checking the footing and walls under the new floor, and the roof type above is part of that work. Sound ones can take light framing. Others are reinforced first, with the details drawn on the plans.
Studs and top plates are exposed at the seam, then fresh framing is nailed to the old on the engineer's pattern. The roof planes join with ties and flashing, and any truss that must be altered receives a stamped repair before anyone cuts it.
Good timing for anchor bolts and under-floor bracing, since the work is already open. If the lot sits in a mapped fire zone, upgraded vents and eaves on the old roof can be priced beside the addition as separate items.
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