Showing results 1 - 20 of 20
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Buried ducts are laid on the floor of a vented attic then covered with spray foam and blown attic floor insulation
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Cut-away view showing unsealed gaps around a heating duct that goes through a wall
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Finished raised ceiling duct chase
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Install duct supports in line with ceiling trusses
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Raised ceiling duct chase is not visible as finished product
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Right - a dropped ceiling below a taped plywood air barrier provides a service cavity for ducts and wiring.
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Right - The HVAC ducts are located in conditioned space in a dropped hallway ceiling with very short duct runs for more efficient delivery.
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Spray foam insulation used for raised ceiling duct chase
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Spray foam insulation used for raised ceiling duct chase.
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Standard 2 in. by 4 in. stud secures duct chase - made of rigid insulation in this example
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The drywall above the chase extends beyond adjoining top plates for a continuous air barrier
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The drywall above the dropped ceiling duct chase extends beyond adjoining top plates for a continuous air barrier
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This typical dropped ceiling hallway chase shows a complicated air sealing scheme where chase ceiling drywall meets sidewall top plates
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Wrong: Drywall does not extend beyond chase wall framing and is unsealed in a hallway dropped ceiling chase
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Wrong: Ducts are held above the ceiling plane with strapping to provide a good angle into top-entry boots. Once the ceiling insulation is added, this duct will protrude from the ceiling insulation and will not be buried