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

Wrapping the outside of a house adds thermal stability and bridges the gaps between new and old construction

ZIP System R-12 insulated sheathing covers a regularly framed wall, a shear wall, and a firewall

Two stud walls—and meticulous airsealing—make a super-efficient structure to hold your roof up

A basement built with frost heave in mind

A show about extreme climate construction and houses that can weather the storm

This R-58 wall has I-joists screwed to the outside and dense-packed with cellulose. It is also one of the four best in 'BS and Beer' circles

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.