Insulation, Air Sealing

Airseal the Rim Joist and Wall Framing Connection

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Glue the rim joist, caulk the gaps, and overhang the wall sheathing to tighten this leaky building assembly

 

Radiant Barriers: 7 Minutes of BS—Building Science w/a Beat

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Thin foil can block massive amounts of heat transfer, but it needs a massive temperature difference to be effective. So, insulation sort of makes radiant barriers irrelevant.

Cold Climate Passive House Retrofit in Connecticut

A collection of five videos on a Passive House Retrofit in Sharon, CT (climate zone 5) executed by Ben Bogie, Built to Last, LLC

Flashing Pipes, Framing, and Exhaust Vents in Exterior Walls

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For walls with a pre-applied weather barrier, make sure the tape is compatible with the WRB coating—or use a primer

 

Extreme Cold-Climate Wall Hacks

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Furring and foam on the INSIDE for better walls in really cold places.

Exterior Assembly Details for a Pacific Northwest Passive House

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The most effective (and easiest) time to detail the air barrier is during the framing stage. If it isn't specified during design, ain't no way the framers are gonna get it right.

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

Energy Star Thermal Bypass Checklist: 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.