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Chimneys and roof valleys are flashed with metal flashing that is integrated with roof shingles.

Chimneys and roof valleys are flashed with metal flashing that is integrated with roof shingles.
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Clean taping areas and install 3" tape on vertical joint of upper insulation overlapping the horizontal joint

Clean taping areas and install 3" tape on vertical joint of upper insulation overlapping the horizontal joint
Video:

Complete Window and Frame Replacement

Video:

Concrete Slab over Polyethylene

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Continuous L-metal flashing integrated with underlayment at roof-wall intersections

Continuous L-metal flashing integrated with underlayment at roof-wall intersections
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Continuous supply and exhaust fans rated ≤ 1 sone by manufacturer

Continuous supply and exhaust fans rated ≤ 1 sone by manufacturer
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Continuously-operating ventilation & exhaust fans include readily accessible override controls

Continuously-operating ventilation & exhaust fans include readily accessible override controls
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Cover the box with insulation

Cover the box with insulation
Presentation:

COVID-Safe Ventilation and Airflow Strategies for Homes and Other Buildings

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Cut a neat hole in the ceiling with smooth edges in which the exhaust fan housing will fit snugly

Cut a neat hole in the ceiling with smooth edges in which the exhaust fan housing will fit snugly
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Deck ledger flashing and fastener details.

Deck ledger flashing and fastener details.
Video:

Direct Water into Gutters with a Kickout Flashing Diverter

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Double fan window units can have multiple operational modes; most often outdoor air will be brought in at night when outdoor conditions are cooler

Double fan window units can have multiple operational modes; most often outdoor air will be brought in at night when outdoor conditions are cooler
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Drip flashing at the door head and drip flashing with hook at the head help to keep out wind-driven rain.

Drip flashing at the door head and drip flashing with hook at the head help to keep out wind-driven rain.
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Duct/pipe penetration with metal cap flashing and wood blocking for trim attachment

Duct/pipe penetration with metal cap flashing and wood blocking for trim attachment
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Ducted whole-house fans should be installed with the duct curved and the fan suspended from rafters to reduce noise and vibration transmission to the living area.

Ducted whole-house fans should be installed with the duct curved and the fan suspended from rafters to reduce noise and vibration transmission to the living area.
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ECM Motor and Control

ECM Motor and Control
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ENERGY STAR ceiling fans can help occupants feel cool so HVAC air conditioning systems can be turned down for energy savings.

ENERGY STAR ceiling fans can help occupants feel cool so HVAC air conditioning systems can be turned down for energy savings.
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ENERGY STAR requires exhaust fans set for intermittent operation to have a sound rating of ≤ 3 sones and exhaust fans set for continual operation to have a sound rating of ≤ 1 sone.

ENERGY STAR requires exhaust fans set for intermittent operation to have a sound rating of ≤ 3 sones and exhaust fans set for continual operation to have a sound rating of ≤ 1 sone.
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ENERGY STAR-rated ceiling fans and openable windows oriented to prevailing summer breezes help provide low-cost cooling.

ENERGY STAR-rated ceiling fans and openable windows oriented to prevailing summer breezes help provide low-cost cooling.
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ENERGY STAR-rated ceiling fans save energy when operating and provide cooling movement to reduce the need for coolant-based air conditioning.

ENERGY STAR-rated ceiling fans save energy when operating and provide cooling movement to reduce the need for coolant-based air conditioning.
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Exhaust fan installed but in wrong direction causing excessive bend and duct is uninsulated

Exhaust fan installed but in wrong direction causing excessive bend and duct is uninsulated
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Exhaust pipe should be made of smooth, rigid duct and any bends should be gradual, not sharp

Exhaust pipe should be made of smooth, rigid duct and any bends should be gradual, not sharp
Video:

Exhaust Ventilation Testing