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Image:

Wrong – Seams of air barrier not sealed

Wrong – Seams of air barrier not sealed
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Wrong – Seams of air barrier not sealed

Wrong – Seams of air barrier not sealed
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Wrong – The backing on this knee wall was not air sealed prior to adding insulation.

Wrong – The backing on this knee wall was not air sealed prior to adding insulation.
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Wrong – The batt insulation on this knee wall is not properly supported and there is no air sealed rigid backing to provide a solid air barrier.

Wrong – The batt insulation on this knee wall is not properly supported and there is no air sealed rigid backing to provide a solid air barrier.
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Wrong – The blower door is installed improperly with a gap at the corner and along the side of the frame that will allow air leakage and could allow the frame apparatus to become dislodged during testing

Wrong – The blower door is installed improperly with a gap at the corner and along the side of the frame that will allow air leakage and could allow the frame apparatus to become dislodged during testing
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Wrong – The blower door pressure reference hose (blue) ends too close to the outdoors side of the fan. Air moving across the end of the hose will affect the pressure reading

Wrong – The blower door pressure reference hose (blue) ends too close to the outdoors side of the fan. Air moving across the end of the hose will affect the pressure reading
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Wrong – The building felt is not installed on the entire house

Wrong – The building felt is not installed on the entire house
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Wrong – The corners are not properly flashed, leaving a vulnerable area in the drainage system

Wrong – The corners are not properly flashed, leaving a vulnerable area in the drainage system
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Wrong – The gable end wall failed because the rigid foam sheathing was not backed up by plywood or OSB.

Wrong – The gable end wall failed because the rigid foam sheathing was not backed up by plywood or OSB.
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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.
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Wrong – The rigid sheathing seams are not taped and the gaps could cause moisture problems

Wrong – The rigid sheathing seams are not taped and the gaps could cause moisture problems
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Wrong – The rough opening around window is not air sealed.

Wrong – The rough opening around window is not air sealed.
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Wrong – The water-resistant barrier is not complete and the holes and gaps could cause moisture problems

Wrong – The water-resistant barrier is not complete and the holes and gaps could cause moisture problems
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Wrong – There is no flashing installed along the sides of the window

Wrong – There is no flashing installed along the sides of the window
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Wrong – There is no flashing installed at the top of the window

Wrong – There is no flashing installed at the top of the window
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Wrong – There is not a water-resistant barrier installed underneath the exterior finish of the walls

Wrong – There is not a water-resistant barrier installed underneath the exterior finish of the walls
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Wrong – There is visible light around the door because no weather stripping has been installed.

Wrong – There is visible light around the door because no weather stripping has been installed.
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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 second-story floor plan has red lines that indicate openings from the attic into the interstitial floor space

Wrong – This second-story floor plan has red lines that indicate openings from the attic into the interstitial floor space
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Wrong – Window has additional non-structural king stud

Wrong – Window has additional non-structural king stud
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Wrong –Best practice solid air barrier material was not used behind the shower surround.

Wrong –Best practice solid air barrier material was not used behind the shower surround.
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Wrong--No insulation installed behind fireplace

Wrong--No insulation installed behind fireplace
Video:

Your Northern Home: Attics/Air leakage/Stack effect