Insulation & Air Sealing

The main difference is in the hand-held digital manometer unit

An example of why cheap construction is not so cheap

Seal the WRB to the wall sheathing and window flashing, and add an apron detail at the bottom

No—and yes. It depends on the exact situation

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

When talking to homeowners or trade contractors about energy-efficient construction this question is inevitable. The answer: Tight houses are good because they lower energy bills and increase comfort. But there's a big BUT

A thermal bridge is an area of the building enclosure—whether it be the walls, roof, or foundation—that has significantly higher heat flow than intended.

The basic BS boils down to "stuff goes from more to less," more or less

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