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Wrong – These plumbing penetrations have been cut larger than needed, making them difficult to seal.

Wrong – These plumbing penetrations have been cut larger than needed, making them difficult to seal.
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Wrong – This cabin has a gap between the concrete slab and the wall where rodents can enter

Wrong – This cabin has a gap between the concrete slab and the wall where rodents can enter
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Wrong – This electric wiring hole was filled with foam that is not protected with copper mesh or hardware cloth so rodents could chew through the foam and enter the house (see Solution Center Guide "Reduce Pest Intrusion").

Wrong – This electric wiring hole was filled with foam that is not protected with copper mesh or hardware cloth so rodents could chew through the foam and enter the house (see Solution Center Guide "Reduce Pest Intrusion").
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Wrong – This hole has not been air-sealed.

Wrong – This hole has not been air-sealed.
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Wrong – This metal duct is crushed, is sealed with duct tape instead of mastic or UL-181 metal tape, and is not correctly supported.

Wrong – This metal duct is crushed, is sealed with duct tape instead of mastic or UL-181 metal tape, and is not correctly supported.
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Wrong – This recessed can light has not been sealed to the drywall.

Wrong – This recessed can light has not been sealed to the drywall.
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Wrong – This recessed light does not have a gasket installed.

Wrong – This recessed light does not have a gasket installed.
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Wrong – This recessed light is not ICAT labeled.

Wrong – This recessed light is not ICAT labeled.
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Wrong – This seam along a common wall is not air sealed.

Wrong – This seam along a common wall is not air sealed.
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Wrong – Top plate not air sealed

Wrong – Top plate not air sealed
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Wrong – Top plate not air sealed

Wrong – Top plate not air sealed
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Wrong – Top plate to drywall connection not sealed

Wrong – Top plate to drywall connection not sealed
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Wrong – Top plate to drywall connection not sealed

Wrong – Top plate to drywall connection not sealed
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Wrong – Top plate to drywall connection not sealed

Wrong – Top plate to drywall connection not sealed
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Wrong – Vent sleeve not completely sealed

Wrong – Vent sleeve not completely sealed
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Wrong – Wall from above without top plate or blocking installed

Wrong – Wall from above without top plate or blocking installed
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Wrong – When insulating with spray foam, care should be taken to completely fill areas around piping and other penetrations to avoid leaving air gaps.

Wrong – When insulating with spray foam, care should be taken to completely fill areas around piping and other penetrations to avoid leaving air gaps.
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Wrong – Where possible, design walls and specify window sizes and placement to minimize the use of studs around windows; and seal all wood-to-wood seams to minimize air leakage through walls.

Wrong – Where possible, design walls and specify window sizes and placement to minimize the use of studs around windows; and seal all wood-to-wood seams to minimize air leakage through walls.
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Wrong – Whole house fan installed with holes in surrounding platform that need to be air sealed

Wrong – Whole house fan installed with holes in surrounding platform that need to be air sealed
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Wrong – Whole house fan installed without an insulated cover

Wrong – Whole house fan installed without an insulated cover
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Wrong- A tie strap should not be used over the duct outer liner because it can compress the insulation. Tuck in the fibrous insulation and seal the outer liner to the connecting duct with mastic or foil tape (Steven Winter Associates 2013).

Wrong- A tie strap should not be used over the duct outer liner because it can compress the insulation. Tuck in the fibrous insulation and seal the outer liner to the connecting duct with mastic or foil tape (Steven Winter Associates 2013).
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Wrong: Open wall cavities in the un-air-sealed return plenum connect the plenum to attic spaces

Wrong: Open wall cavities in the un-air-sealed return plenum connect the plenum to attic spaces
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Wrong: open wall cavity connected to this return air plenum is allowing cellulose attic insulation to be pulled into the furnace

Wrong: open wall cavity connected to this return air plenum is allowing cellulose attic insulation to be pulled into the furnace
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Wrong: The door and filter were removed, allowing unfiltered air to enter the air handler leading to premature failure of the system due to dirt accumulation.

Wrong: The door and filter were removed, allowing unfiltered air to enter the air handler leading to premature failure of the system due to dirt accumulation.