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Air seal the top, bottom, and sides of a cantilevered floor cavity and ensure that insulation is in full contact with all sides without voids.
Air seal the top, bottom, and sides of a cantilevered floor cavity and ensure that insulation is in full contact with all sides without voids.
Air seal the top, bottom, and sides of a cantilevered floor cavity and ensure that insulation is in full contact with all sides without voids.
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All seams are caulked to completely air seal the subfloor of the cantilever
All seams are caulked to completely air seal the subfloor of the cantilever
All seams are caulked to completely air seal the subfloor of the cantilever
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Cantilever floor with insulation and air blocking
Cantilever floor with insulation and air blocking
Cantilever floor with insulation and air blocking
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Cover bottom of cantilever area with rigid foam insulation
Cover bottom of cantilever area with rigid foam insulation
Cover bottom of cantilever area with rigid foam insulation
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Cover rigid foam with siding or with 3/8-inch exterior plywood
Cover rigid foam with siding or with 3/8-inch exterior plywood
Cover rigid foam with siding or with 3/8-inch exterior plywood
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Fill the joist bays with fiberglass batt or spray foam
Fill the joist bays with fiberglass batt or spray foam
Fill the joist bays with fiberglass batt or spray foam
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Fill the joist bays with fiberglass batt or spray foam
Fill the joist bays with fiberglass batt or spray foam
Fill the joist bays with fiberglass batt or spray foam
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Right – All holes, gaps, and seams of the rigid air barrier are air sealed.
Right – All holes, gaps, and seams of the rigid air barrier are air sealed.
Right – All holes, gaps, and seams of the rigid air barrier are air sealed.
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Right – Cantilever has been properly insulated, air sealed, and cavity has been blocked.
Right – Cantilever has been properly insulated, air sealed, and cavity has been blocked.
Right – Cantilever has been properly insulated, air sealed, and cavity has been blocked.
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Rigid foam and caulk are used to seal each joist bay cavity
Rigid foam and caulk are used to seal each joist bay cavity
Rigid foam and caulk are used to seal each joist bay cavity
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These floor joist bays have been properly air sealed with caulked rigid foam insulation
These floor joist bays have been properly air sealed with caulked rigid foam insulation
These floor joist bays have been properly air sealed with caulked rigid foam insulation
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Wrong - Cantilevered floor joist bay cavities are not air sealed with a solid air barrier aligned with the exterior wall.
Wrong - Cantilevered floor joist bay cavities are not air sealed with a solid air barrier aligned with the exterior wall.
Wrong - Cantilevered floor joist bay cavities are not air sealed with a solid air barrier aligned with the exterior wall.
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Wrong - Cantilevered joist bay cavities are not air sealed with a solid air barrier, allowing outside air to flow between floors.
Wrong - Cantilevered joist bay cavities are not air sealed with a solid air barrier, allowing outside air to flow between floors.
Wrong - Cantilevered joist bay cavities are not air sealed with a solid air barrier, allowing outside air to flow between floors.
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Wrong - Holes in rim joist around pipes and wiring are not air-sealed.
Wrong - Holes in rim joist around pipes and wiring are not air-sealed.
Wrong - Holes in rim joist around pipes and wiring are not air-sealed.
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Wrong - Plumbing penetrations are not sealed in sub-floor and it is not recommended to run plumbing in a cantilevered floor.
Wrong - Plumbing penetrations are not sealed in sub-floor and it is not recommended to run plumbing in a cantilevered floor.
Wrong - Plumbing penetrations are not sealed in sub-floor and it is not recommended to run plumbing in a cantilevered floor.
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Wrong - The holes around the HRV ducting should be air sealed.
Wrong - The holes around the HRV ducting should be air sealed.
Wrong - The holes around the HRV ducting should be air sealed.
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Wrong - Tub or shower floor is not insulated and air-sealed with a solid barrier material between the floor joists and the tub. Plumbing pipes shouldn't be located in a cantilever.
Wrong - Tub or shower floor is not insulated and air-sealed with a solid barrier material between the floor joists and the tub. Plumbing pipes shouldn't be located in a cantilever.
Wrong - Tub or shower floor is not insulated and air-sealed with a solid barrier material between the floor joists and the tub. Plumbing pipes shouldn't be located in a cantilever.
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Wrong – Cantilever is not blocked or insulated.
Wrong – Cantilever is not blocked or insulated.
Wrong – Cantilever is not blocked or insulated.
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Wrong – The rigid air barrier material between the cantilever and the conditioned space is not air sealed at the seams.
Wrong – The rigid air barrier material between the cantilever and the conditioned space is not air sealed at the seams.
Wrong – The rigid air barrier material between the cantilever and the conditioned space is not air sealed at the seams.
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