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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 plumbing pipe is wrapped with a stainless steel mesh skirt that is clamped to the pipe before the concrete slab is poured to to keep out bugs and rodents

This plumbing pipe is wrapped with a stainless steel mesh skirt that is clamped to the pipe before the concrete slab is poured to to keep out bugs and rodents
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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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This termite mud tube shows termites have climbed the foundation wall to reach the home’s subfloor

This termite mud tube shows termites have climbed the foundation wall to reach the home’s subfloor
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This window frame shows extensive termite damage

This window frame shows extensive termite damage
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This wood siding has sustained heavy damage from termites.

This wood siding has sustained heavy damage from termites.
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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.
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Unvented concrete masonry unit crawl space with exterior insulation - designed for termite resistance in moderately infested areas

Unvented concrete masonry unit crawl space with exterior insulation - designed for termite resistance in moderately infested areas
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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 copper or stainless steel mesh plus caulk or foam around holes in exterior walls or epoxy in cracks in concrete to keep out rodents and termites.

Use copper or stainless steel mesh plus caulk or foam around holes in exterior walls or epoxy in cracks in concrete to keep out rodents and termites.
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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
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Ventilation air inlets provided with rodent / insect screen with ≤ 0.5 inch mesh

Ventilation air inlets provided with rodent / insect screen with ≤ 0.5 inch mesh
Case Study:

Veridian Homes: Cold Climate Region 40+% Energy Savings

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What mesh opening size is needed to keep out what type of pests?

What mesh opening size is needed to keep out what type of pests?
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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