Insulation, Air Sealing

Energy Star Checklist, Section 1: Overall Air Barrier and Thermal Alignment

18 Videos, articles, and animations showing you how to get through Section 1 of the Energy Star Thermal Bypass Checklist. It is about the continuity between various components of the air barrier system and the thermal envelope.

 

Modified Larsen Truss Retrofit: I-Joists on a Roof

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Framing a roof with I-joists over the existing roof makes a ton of room for insulation and offers a short lesson in vapor movement through assemblies

Moisture Management Design Rule 2: Manage Condensation

Condensation is when moisture in the air hits a cool enough surface to convert the vapor into water.

How Ice Dams Form, and How To Stop Them

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Four ways to prevent ice dams in three types of roof, for two climates in one video. Boom.

 

How To Install House Wrap #TheRightWay

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Counting down the top 15 pages of 2016. This one is #2. Stop rot with house wrap

Live Demos in Boston at ABX

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Hands-on training with local pros at the largest construction event in the Northeast

Ice Dam Podcast: What, How, Why, and Prevention

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A big problem, for roofs in cold climates, but what causes it and how can you fix it?

 

Airtight Walls—Housewrap and Sheathing as an Air Barrier

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A tight air barrier is the best way to build an energy-efficient house. Outside the sheathing are many chances to make it better.

Airtight Dropped Soffit for Ducts, Fans, or Can Lights

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Keep mechanical equipment within the envelope to improve the quality of houses and homes

Outie Window Details for Walls with Thick Exterior Insulation

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A thermal break and solid backing puts the window on the outer face of a thick wall. Now, there's room on the inside window sill for cats and bowling trophies

 

Stack Effect: 7 Minutes of BS (#buildingscience)

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Stack effect is relentless: it is always working, when you’re awake or asleep, even during blackouts. And it feeds on itself.

 

Air Sealing a Dropped Soffit: Why and How in Three Minutes

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When air sealing a house, begin with the biggest holes and work toward the small ones

Infill Foundation for a Four-Story Passive House

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"In order to maximize the buildable area on the infill lot, we had to go fairly deep and do some extensive shoring."

—Dan Whitmore of Hammer & Hand 

Thermal Bridging: A Podcast About BS (#buildingscience)

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This is the first episode of 7 Minutes of BS (building science). We break it down with engineers and building scientists.