
Insulation & Air Sealing

You can't stop heat flow, but you can keep your floor from becoming a big ol' heat sink

The final step: center it in the opening, and seal the perimeter


Blowing a thick bed of insulation into an attic is really a two-person job, but you can do it by yourself if you have to

An affordable insulated slab foundation suitable for climate zones 1, 2, and 3

A few really cool tricks and a Master Class at the end

The air sealing process for a high performance home with double-stud walls.

Tight makes right behind tubs and showers—because they can be *ruff* to retrofit

You can dig in to the roof without adding more insulation, but you can't dig far




The biggest hole in the bathroom

For the price of a drywall repair, you can look inside walls with a thermal camera at insulation and air leaks

You can use your hand to detect some air leaks, but smoke puffers make other air leaks easier to "see."


Insulation does more than slow heat flow: it sells houses, future proofs, makes floor plans bigger, and sends your kids to college. Really.
