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Standard 2 in. by 4 in. stud secures duct chase - made of rigid insulation in this example

Standard 2 in. by 4 in. stud secures duct chase - made of rigid insulation in this example
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Strips of roofing membrane are used to flash around a skylight on a flat roof retrofit

Strips of roofing membrane are used to flash around a skylight on a flat roof retrofit
Presentation:

Stump the Building Chump – Joe Lstiburek

Stump the Building Chump – Joe Lstiburek
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Sun tunnels bring daylight into the home, reducing electricity use.

Sun tunnels bring daylight into the home, reducing electricity use.
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Sun tunnels fill the room with sunlight so that electric light is unnecessary.

Sun tunnels fill the room with sunlight so that electric light is unnecessary.
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Table of Maximum Fenestration U-Factor Requirements for New Homes as Listed in the 2009-2021 IECC and IRC

Table of Maximum Fenestration U-Factor Requirements for New Homes as Listed in the 2009-2021 IECC and IRC
Case Study:

Technology Solutions Case Study: High-Performance Ducts in Hot-Dry Climates

Case Study:

Technology Solutions Case Study: Raised Ceiling Interior Duct System

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The attic kneewall and the open floor cavities under kneewall are both sealed and insulated in one step with spray foam insulation

The attic kneewall and the open floor cavities under kneewall are both sealed and insulated in one step with spray foam insulation
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The batt insulation shown here was properly installed to fill the ceiling cavities.

The batt insulation shown here was properly installed to fill the ceiling cavities.
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The builder installed this OSB under the roof rafters and air sealed the seams with tape then added a dropped drywall ceiling to provide a service cavity for ducts and wiring, while minimizing holes into the attic.

The builder installed this OSB under the roof rafters and air sealed the seams with tape then added a dropped drywall ceiling to provide a service cavity for ducts and wiring, while minimizing holes into the attic.
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The ceiling drywall is sealed to the top plates with caulk.

The ceiling drywall is sealed to the top plates with caulk.
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The DOE Efficient Window Coverings website identifies twelve categories of interior window shading attachments.

The DOE Efficient Window Coverings website identifies twelve categories of interior window shading attachments.
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The drywall above the chase extends beyond adjoining top plates for a continuous air barrier

The drywall above the chase extends beyond adjoining top plates for a continuous air barrier
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The drywall above the dropped ceiling duct chase extends beyond adjoining top plates for a continuous air barrier

The drywall above the dropped ceiling duct chase extends beyond adjoining top plates for a continuous air barrier
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The Efficient Window Coverings website allows direct comparison of various window attachment types based on thermal, visual, functional, and installation and durability criteria.

The Efficient Window Coverings website allows direct comparison of various window attachment types based on thermal, visual, functional, and installation and durability criteria.
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The floor cavities under this attic kneewall are completely open to the unconditioned attic space and a prime target for wind washing

The floor cavities under this attic kneewall are completely open to the unconditioned attic space and a prime target for wind washing
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The mechanical curb for a skylight is integrated with the water management and air control layers on a flat roof retrofitted to include new above-deck rigid foam insulation

The mechanical curb for a skylight is integrated with the water management and air control layers on a flat roof retrofitted to include new above-deck rigid foam insulation
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The original corner seam is air-sealed with caulk, then rigid foam is installed on the existing garage ceiling and walls, and finally covered with drywall.

The original corner seam is air-sealed with caulk, then rigid foam is installed on the existing garage ceiling and walls, and finally covered with drywall.
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The rim joists and top plates are air sealed and insulated with open-cell spray foam while the walls are filled with blown fiberglass.

The rim joists and top plates are air sealed and insulated with open-cell spray foam while the walls are filled with blown fiberglass.
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The seams in the ceiling drywall are sealed from the attic side with spray foam.

The seams in the ceiling drywall are sealed from the attic side with spray foam.
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The soffit dam and baffle allow air to flow through the vents without disturbing the insulation covering the top plates

The soffit dam and baffle allow air to flow through the vents without disturbing the insulation covering the top plates
Video:

The Truth about insulation in a hot climate

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The unvented attic is insulated along the underside of the roof deck with 7 inches (R-49) of closed-cell spray foam, providing vaulted ceilings and a conditioned knee wall space for ducting.

The unvented attic is insulated along the underside of the roof deck with 7 inches (R-49) of closed-cell spray foam, providing vaulted ceilings and a conditioned knee wall space for ducting.