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Image:

Wrong – Penetration through the floor is not air sealed

Wrong – Penetration through the floor is not air sealed
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Wrong – Rigid air barrier not installed to hold insulation in place

Wrong – Rigid air barrier not installed to hold insulation in place
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Wrong – Rigid air barrier not properly sealed around skylight shaft

Wrong – Rigid air barrier not properly sealed around skylight shaft
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Wrong – Rips in foil air barrier behind shower were not taped; solid air barrier material is more durable.

Wrong – Rips in foil air barrier behind shower were not taped; solid air barrier material is more durable.
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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 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 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 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 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 – 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 –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