Insulation & Air Sealing

Airsealing Leaks During a Remodel: Framing, Framing, Framing

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Doubling the square footage of a house while cutting the air leakage in half delivers extraordinary value

 

Raised Heel Roof Framing Options That Make Space For Insulation

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Whether using roof trusses or stick framing a roof frame, if you make space above the exterior walls, your energy performance will thank you.

 

Framing Tips for Walls with Thick ZIPs

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Exterior insulation can create transition problems. Here are a few solutions

Vapor Permeance: 7 Minutes of BS—Building Science w/a Beat

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Vapor barriers cause a lot more harm than good in many parts of North America. Understanding vapor barriers begins with knowing what it means to be one

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.