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Presentation:

Stump the Building Chump – Joe Lstiburek

Stump the Building Chump – Joe Lstiburek
Case Study:

Technology Solutions Case Study: Combustion Safety for Appliances Using Indoor Air

Case Study:

Technology Solutions Case Study: Moisture Durability of Vapor Permeable Insulating Sheathing

Case Study:

Technology Solutions Case Study: Properly Sized and Located Return Air Inlets

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The “institutional” perfect wall works in all climate zones; water, air, vapor, and thermal control layers are exterior of the sheathing, assembly allows drying to interior and exterior

The “institutional” perfect wall works in all climate zones; water, air, vapor, and thermal control layers are exterior of the sheathing, assembly allows drying to interior and exterior
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The air tightness of the garage-to-house air barrier can be tested with a blower door kit and two manometers

The air tightness of the garage-to-house air barrier can be tested with a blower door kit and two manometers
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The air tightness of the house-garage air barrier can be tested using a CFM50 test that is first run with the garage door to outdoors closed

The air tightness of the house-garage air barrier can be tested using a CFM50 test that is first run with the garage door to outdoors closed
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The air tightness of the house-garage air barrier can be tested using a CFM50 test that is run first with the garage door to outdoors closed and then with the overhead garage door to outdoors open

The air tightness of the house-garage air barrier can be tested using a CFM50 test that is run first with the garage door to outdoors closed and then with the overhead garage door to outdoors open
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The airflow direction is labeled on the edge of the filter to ensure it is properly oriented when installed.

The airflow direction is labeled on the edge of the filter to ensure it is properly oriented when installed.
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The below-grade wall assembly includes dampproofing, draining details, and insulation.

The below-grade wall assembly includes dampproofing, draining details, and insulation.
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The builder’s crews spray foam directly onto the ground to provide a vapor barrier and insulation layer under the slab.

The builder’s crews spray foam directly onto the ground to provide a vapor barrier and insulation layer under the slab.
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The edge of this 1-inch HVAC filter indicates it's dimensions, allowing proper matching of filter to air handler

The edge of this 1-inch HVAC filter indicates it's dimensions, allowing proper matching of filter to air handler
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The floor of the sealed insulated crawlspace is covered with a heavy plastic vapor-barrier sheathing that is taped at all seams and around the foundation piers to prevent water vapor from moving into the crawlspace.

The floor of the sealed insulated crawlspace is covered with a heavy plastic vapor-barrier sheathing that is taped at all seams and around the foundation piers to prevent water vapor from moving into the crawlspace.
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The green-lit panel next to the fan and light switches is an indoor air quality sensor that will automatically turn on the exhaust fan if it detects a rise in humidity or indoor air pollutants.

The green-lit panel next to the fan and light switches is an indoor air quality sensor that will automatically turn on the exhaust fan if it detects a rise in humidity or indoor air pollutants.
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The grooves and ridges within flexible ducts can collect dust and dirt

The grooves and ridges within flexible ducts can collect dust and dirt
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The home is equipped with an advanced filtration system capable of removing 99.7% of contaminants from the indoor air.

The home is equipped with an advanced filtration system capable of removing 99.7% of contaminants from the indoor air.
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The Larsen-truss 9-inch wall cavities were covered with a smart vapor membrane that was fastened to the trusses with furring strips, which also provide an air gap behind the wood siding; each truss cavity is then filled with blown cellulose.

The Larsen-truss 9-inch wall cavities were covered with a smart vapor membrane that was fastened to the trusses with furring strips, which also provide an air gap behind the wood siding; each truss cavity is then filled with blown cellulose.
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The MERV rating, particle capture efficiencies, and pressure drops are printed on the side of this 1-inch pleated filter

The MERV rating, particle capture efficiencies, and pressure drops are printed on the side of this 1-inch pleated filter
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The Perfect Wall includes water, air, thermal, and vapor layers with continuous insulation exterior of the sheathing to reduce the condensation potential in the wall.

The Perfect Wall includes water, air, thermal, and vapor layers with continuous insulation exterior of the sheathing to reduce the condensation potential in the wall.
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The polyethylene ground cover in the crawl space is lapped up sides of piers to posts to provide a continuous air and vapor barrier

The polyethylene ground cover in the crawl space is lapped up sides of piers to posts to provide a continuous air and vapor barrier
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The polyethylene ground cover in the crawlspace is continuous at interior posts and piers

The polyethylene ground cover in the crawlspace is continuous at interior posts and piers
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These garages attached to multifamily townhouses are open to the exterior, allowing for natural air changes to remove airborne contaminants from the garage.

These garages attached to multifamily townhouses are open to the exterior, allowing for natural air changes to remove airborne contaminants from the garage.
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This exterior wall retrofit permits drying to the exterior of a sill plate installed on an untreated flat foundation wall

This exterior wall retrofit permits drying to the exterior of a sill plate installed on an untreated flat foundation wall
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This exterior wall retrofit permits drying to the exterior of a sill plate installed on an untreated irregular foundation wall

This exterior wall retrofit permits drying to the exterior of a sill plate installed on an untreated irregular foundation wall