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Key connection points for a continuous load path for earthquake and high wind disaster resistance
Raised ceiling duct chase installation technique
Right – This roof consists of parallel truss chords which allows for cathedral ceilings.
The drywall above the dropped ceiling duct chase extends beyond adjoining top plates for a continuous air barrier
The rim joists and top plates are air sealed and insulated with open-cell spray foam while the walls are filled with blown fiberglass.
This kneewall has no top plate and the resulting gap provides a wide-open pathway for air and vapor to travel between the living space and the attic
Wrong: Drywall does not extend beyond chase wall framing and is unsealed in a hallway dropped ceiling chase