Room Additions in Granada Hills
Room additions in Granada Hills with boxed noncombustible eaves, screened vents and ember-aware roof edges, drawn for LADBS review by Aspenwell.
Open eaves let embers gather where wall meets roof, so a boxed soffit with a noncombustible face is the material choice to settle first on a Granada Hills addition. Mapped fire hazard zones reach into Granada Hills, so a lot there could carry ember-resistance requirements. Metal or fiber cement soffit panels, fine-mesh vent screens and a Class A roof covering finish the roof edge.
The roof edge in an ember-aware build
Embers lodge in gaps. A boxed eave with a metal or fiber cement face removes the cavity they favor, and vent openings get screens with openings fine enough to stop them. Gutters collect leaves that burn, so covers or metal guards are specified. The roof covering is rated Class A, and the new roof is lapped into the old one so no bare wood is left at the junction. Where the lot falls inside a mapped fire zone, the reviewer may ask to see each of these details. Fine-mesh screens at the vents and tight blocking at the rafter ends close the remaining gaps where embers can enter.
Walls, glass and the structure behind them
Stucco and fiber cement siding are noncombustible, and either one can sit over the wall sheathing that carries the shear load. Tempered double-pane glass resists heat better than single annealed glass. None of this matters if the frame itself shifts, so the plan still traces load from roof to footing, with hold-downs where the engineer calls for them. LADBS reviews the set, and inspections follow footings, framing and the exterior stages. A sealed gap in the attic or at the sill costs little to close and keeps embers out of cavities that are hard to reach after the finishes go on.
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Often the footing holds up better than the lower walls, and the walls need attention first. Plywood shear panels and hold-downs on the ground floor carry the new floor's sideways force. We expose the concrete and check the walls for bracing. The engineer then sets a scope, from posts to new footing sections.
Metal connectors and a nailing schedule from the engineer pull new framing to old. We open a narrow band of wall and roof, lap the roofing and flashing across it and cover the seam with ember-resistant materials where the lot calls for them. Inspection comes first, and finish work follows.
Worth doing while crews are already working. Bolting the sill and bracing low walls fits under the addition permit, and the old vents and eave gaps can be sealed with screens and boxed soffits. The house is then more consistently protected than the new room alone would be.
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Describe the house and what it needs. We look at the structure first and send the quote in writing.