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Ventilation air comes directly from outdoors, not from adjacent dwelling units, garages, crawlspaces, or attics

Ventilation air comes directly from outdoors, not from adjacent dwelling units, garages, crawlspaces, or attics
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Ventilation duct is compressed because supporting strap is too small

Ventilation duct is compressed because supporting strap is too small
Case Study:

Veridian Homes: Cold Climate Region 40+% Energy Savings

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Vertical service shafts and trash chutes are isolated from corridors in multistory buildings by locating them within the vestibules

Vertical service shafts and trash chutes are isolated from corridors in multistory buildings by locating them within the vestibules
Video:

Wallingford Passive House | Blower Door Test

Video:

Wallingford Passive House | Exterior Assembly Details

Video:

Walls Behind Showers and Tubs (2)

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Walls in cold climates with a Class 3 vapor retarder (latex paint) and a vapor-open continuous insulation like mineral wool allow drying to the interior or the exterior

Walls in cold climates with a Class 3 vapor retarder (latex paint) and a vapor-open continuous insulation like mineral wool allow drying to the interior or the exterior
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Walls in cold climates with a polyethylene vapor barrier interior of the wall cavity should have either no exterior insulation or a vapor-open continuous insulation like mineral wool that allows drying to the exterior

Walls in cold climates with a polyethylene vapor barrier interior of the wall cavity should have either no exterior insulation or a vapor-open continuous insulation like mineral wool that allows drying to the exterior
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Weather resistant barrier is wrapped over the edge from roof to wall sheathing to provide a continuous air barrier at this transition.

Weather resistant barrier is wrapped over the edge from roof to wall sheathing to provide a continuous air barrier at this transition.
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Weatherstrip installation on a door.

Weatherstrip installation on a door.
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Weatherstripping has been installed along the edge of this attic access panel to air seal the opening.

Weatherstripping has been installed along the edge of this attic access panel to air seal the opening.
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Weatherstripping has been installed along the framing of this attic access panel to air seal the opening.

Weatherstripping has been installed along the framing of this attic access panel to air seal the opening.
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When appliances are pulled out, you can access the sill plate to seal between the wall and subfloor as well as around other holes in the walls for wiring or plumbing.

When appliances are pulled out, you can access the sill plate to seal between the wall and subfloor as well as around other holes in the walls for wiring or plumbing.
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When architects and builders think of the house as a systems, all of the parts are designed to work together for a healthy, durable home that minimizes builder callbacks while cutting energy, maintenance, and repair costs down the road.

When architects and builders think of the house as a systems, all of the parts are designed to work together for a healthy, durable home that minimizes builder callbacks while cutting energy, maintenance, and repair costs down the road.
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When rigid foam insulation is applied to the exterior side of the wall cavity under the cladding, with seams taped and an air gap provided, it acts as a vapor barrier, air barrier, and rain screen.

When rigid foam insulation is applied to the exterior side of the wall cavity under the cladding, with seams taped and an air gap provided, it acts as a vapor barrier, air barrier, and rain screen.
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When using I-joists, make sure to fill in the gaps on each side of the blocking material to air-seal the joist bay where a wall separates conditioned and unconditioned spaces.

When using I-joists, make sure to fill in the gaps on each side of the blocking material to air-seal the joist bay where a wall separates conditioned and unconditioned spaces.
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When wiring is installed in ICF walls, openings made for wire runs should be air-sealed with caulk.

When wiring is installed in ICF walls, openings made for wire runs should be air-sealed with caulk.
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Where the interior wall intersects the corridor wall in this multifamily building, the first intersecting wall stud is sealed to the corridor wall along both sides; other seams and penetrations in the exterior wall are also sealed

Where the interior wall intersects the corridor wall in this multifamily building, the first intersecting wall stud is sealed to the corridor wall along both sides; other seams and penetrations in the exterior wall are also sealed
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While heat loss at a glass sliding door is to be expected, the very dark area along the door in this IR camera image indicates significant heat loss that could be due to a badly aligned door, missing weather stripping, or air leakage

While heat loss at a glass sliding door is to be expected, the very dark area along the door in this IR camera image indicates significant heat loss that could be due to a badly aligned door, missing weather stripping, or air leakage below the door frame.
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Whole house fan cover details

Whole house fan cover details
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Whole house fans draw cool night-time air in through open windows and expel hot house air into the vented attic

Whole house fans draw cool night-time air in through open windows and expel hot house air into the vented attic
Video:

Why Close a Crawlspace?

Video:

Window and Door Rough Openings