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This close-up of an exterior wall retrofit of a masonry brick home shows the fluid-applied water and air control layer (white), 2x4 furring strips and two layers of rigid foam insulation (pink), then 1x4 furring which provides a ventilation gap

This close-up of an exterior wall retrofit of a masonry brick home shows the fluid-applied water and air control layer (white), 2x4 furring strips and two layers of rigid foam insulation (pink), then 1x4 furring which provides a ventilation gap
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This EV charger is located near the home’s electrical panel and a time-of-use (TOU) meter.

This EV charger is located near the home’s electrical panel and a time-of-use (TOU) meter.
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This EV charger was properly installed with clear floor and wall access for charging.

This EV charger was properly installed with clear floor and wall access for charging.
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This interior wall is intersected by two ceilings of different heights; it is built as two walls stacked on one another, each having a bottom and top plate which act as barriers to airflow between levels.

This interior wall is intersected by two ceilings of different heights; it is built as two walls stacked on one another, each having a bottom and top plate which act as barriers to airflow between levels.
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This interior wall is intersected by two ceilings of different heights; without blocking installed at the level of the lower ceiling, a pathway for free airflow within the wall cavity or even into the attic is created.

This interior wall is intersected by two ceilings of different heights; without blocking installed at the level of the lower ceiling, a pathway for free airflow within the wall cavity or even into the attic is created.
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This narrow bottle brush was an effective tool for removing the debris between the blades of this bathroom exhaust fan

This narrow bottle brush was an effective tool for removing the debris between the blades of this bathroom exhaust fan
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This parapet wall has metal blocking and spray foam in the wall at the level of the roof insulation; this limits airflow within or through the wall cavity.

This parapet wall has metal blocking and spray foam in the wall at the level of the roof insulation; this limits airflow within or through the wall cavity.
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This parapet wall has no blocking to prevent the convection of cold air through the insulation, which significantly reduces the effectiveness of the insulation.

This parapet wall has no blocking to prevent the convection of cold air through the insulation, which significantly reduces the effectiveness of the insulation.
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This simple decision tree can help homeowners and contractors make decisions about re-siding a home and upgrading windows

This simple decision tree can help homeowners and contractors make decisions about re-siding a home and upgrading windows
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To test bathroom exhaust fan airflow, hold a tissue up to the fan while it is running; if it holds, airflow is good.

To test bathroom exhaust fan airflow, hold a tissue up to the fan while it is running; if it holds, airflow is good.
Video:

UAF Cooperative Extension Service: Radon Mitigation in Super-Insulated Slab

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Use a pry bar or dull putty knife to push backer rod into the rough opening around an existing window

Use a pry bar or dull putty knife to push backer rod into the rough opening around an existing window
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Use a vacuum brush attachment or a soft dry cloth to clean the light fixture of the exhaust fan/light

Use a vacuum brush attachment or a soft dry cloth to clean the light fixture of the exhaust fan/light
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Use a vacuum brush attachment to clean the exhaust fan motor and blades

Use a vacuum brush attachment to clean the exhaust fan motor and blades
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Use pry bars to remove the trim around an existing window to access the rough opening

Use pry bars to remove the trim around an existing window to access the rough opening
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Use the brush attachment on your vacuum to remove dust and debris on the bathroom exhaust fan vents

Use the brush attachment on your vacuum to remove dust and debris on the bathroom exhaust fan vents
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Vented crawlspace cripple wall has seismic retrofits – plywood is added on interior that fastens to extra blocking added at sill plate and connected to foundation with new anchor bolts

Vented crawlspace cripple wall has seismic retrofits – plywood is added on interior that fastens to extra blocking added at sill plate and connected to foundation with new anchor bolts
Case Study:

Veridian Homes: Cold Climate Region 40+% Energy Savings

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Vertical ventilation pipe

Vertical ventilation pipe
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Wind-Damage Reduction as a Function of Retrofit Level

Wind-Damage Reduction as a Function of Retrofit Level
CAD File:

Window head at window frame wall

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Window head at window frame wall
CAD File:

Window head at wood frame wall

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Window head at wood frame wall
CAD File:

Window sill at wood frame wall

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Window sill at wood frame wall
CAD File:

Window sill at wood frame wall

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Window sill at wood frame wall