Three mechanisms usually work together to move electrons from more to less. These three mechanisms can conspire to move heat AROUND your insulation.

A field-tested collection of videos, articles, and animated details on practical improvements to the framing process that strips out the less-valuable 'advice' often passed on by others

A thick wall with exterior insulation with airtight details for the foundation and ceiling

There are six sections and 22 subsections to the Thermal Bypass Checklist. These 16 videos, animations, articles, and podcasts cover all six sections.

Closed-cell spray foam in a two-part froth pack is a fast and effective way to eliminate thermal bridges and air leaks in building assemblies

Stretchy gasket tape, flanged workboxes, and sealant can solve a HOLE lotta air leaks

Two types of tapes for two air sealing applications

Interior membranes can be part of a high-performance wall assembly as a vapor retarder or as part of an air barrier system

Barriers, air gaps, continuous insulation, and redundancy give durability to a new crawlspace

A dry and healthy crawlspace is sealed tightly against water and air leaks

The premier season of Weatherization Nation was shot in NW Washington DC where we tore off an unfortunate addition to the back of a 70+-year-old brick house and we added a two-story addition which nearly doubled the sliving space.

Can a wall plummet from R-50 to R-12 because of the studs?

The Model Remodel Show followed the progress of the 2017 Model Remodel project by Professional Remodeler magazine.

Everything there is to know (well, almost) about blower door testing with a few engineer-y jokes along the way.

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

The @EnergyVanguard investigates an attic insulation job in Charleston, SC. #TheBadNews: from zero to nine inches thick in one roof. #BadDogNoBiscuit.

This Best Practice Handbook covers the roof, walls, and floor assemblies of the building envelope.

One of the biggest air leaks in a house is where the wood meets the concrete