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Wrong – Don’t cut more out of framing than needed for plumbing pipes.

Wrong – Don’t cut more out of framing than needed for plumbing pipes.
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Wrong – Don’t use nails to fasten poly vapor barrier around flex ducts; it will allow moist air to reach the ducts where it could condense and ruin the insulation.

Wrong – Don’t use nails to fasten poly vapor barrier around flex ducts; it will allow moist air to reach the ducts where it could condense and ruin the insulation.
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Wrong – Drain pipe has been cut and foundation penetration has not been properly sealed

Wrong – Drain pipe has been cut and foundation penetration has not been properly sealed
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Wrong – Driveway is not sloped away from the house

Wrong – Driveway is not sloped away from the house
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Wrong – Drop down stairs do not have insulation cover installed

Wrong – Drop down stairs do not have insulation cover installed
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Wrong – Duct is pulling away from ceiling because it is not sealed to the ceiling

Wrong – Duct is pulling away from ceiling because it is not sealed to the ceiling
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Wrong – Duct is pulling away from floor because it is not sealed to floor

Wrong – Duct is pulling away from floor because it is not sealed to floor
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Wrong – Either this tape was not pressed down firmly or the surface was wet or dirty so the tape is not sticking properly even during construction.

Wrong – Either this tape was not pressed down firmly or the surface was wet or dirty so the tape is not sticking properly even during construction.
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Wrong – Electrical box not air sealed

Wrong – Electrical box not air sealed
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Wrong – Electrical bypass not sealed.

Wrong – Electrical bypass not sealed.
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Wrong – Electrical wiring hole in top plate is not sealed with caulk.

Wrong – Electrical wiring hole in top plate is not sealed with caulk.
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Wrong – Excessive and structurally unnecessary framing at door

Wrong – Excessive and structurally unnecessary framing at door
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Wrong – Excessive bends in flex ducts

Wrong – Excessive bends in flex ducts
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Wrong – Excessive framing and improper spacing of studs

Wrong – Excessive framing and improper spacing of studs
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Wrong – Excessive framing will not allow corner to be insulated

Wrong – Excessive framing will not allow corner to be insulated
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Wrong – Exhaust fan ducts must be smooth metal ducts; flex duct is not permitted by the IRC.

Wrong – Exhaust fan ducts must be smooth metal ducts; flex duct is not permitted by the IRC.
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Wrong – Fiber board duct is not sealed at seams; flex duct is sealed with duct tape not mastic tape or UL-181 metal tape.

Wrong – Fiber board duct is not sealed at seams; flex duct is sealed with duct tape not mastic tape or UL-181 metal tape.
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Wrong – Fibrous insulation does not air seal

Wrong – Fibrous insulation does not air seal
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Wrong – Fibrous insulation is not an air barrier and cannot be used for sealing holes.

Wrong – Fibrous insulation is not an air barrier and cannot be used for sealing holes.
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Wrong – Fibrous insulation is not an air barrier and cannot be used for sealing holes.

Wrong – Fibrous insulation is not an air barrier and cannot be used for sealing holes.
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Wrong – Fibrous insulation is not an air barrier and cannot be used to air-seal openings.

Wrong – Fibrous insulation is not an air barrier and cannot be used to air-seal openings.
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Wrong – Flex duct is coiled and looped

Wrong – Flex duct is coiled and looped
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Wrong – Flex duct is pinched

Wrong – Flex duct is pinched
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Wrong – Floor system does not have air barrier to separate it from garage

Wrong – Floor system does not have air barrier to separate it from garage