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.

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.

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

Dew point differs from relative humidity in that it measures exactly how much vapor is present. With relative humidity, it's all relative.

Snap a line, put the panel on the line and nail it, tape the seams, and where to snap that line in the first place.

Five videos about how to install a subfloor over thick insulation without sleepers. The insulation can be over a concrete slab, or not...

Your electrician can make the insulation work better and easier to install