Outside insulation is an effective way to keep heat in. The devil is in the details, such as this one

Like an out-of-plumb wall, an insulated and unvented roof can work well—or not.

The first layer of foam is mostly an insulation layer; the outer layer is the air barrier and drainage plane. This video is about the first layer.

A retrofit solution that works great for a low-skill workforce—like volunteers

A saw and a knife that cut rockwool insulation like a "laser"

If you can't build to stay dry, build to tolerate wet

Make a route for drainage, protect the structure, and use water-tolerant materials to rebuild

Turns out, ducts buried under insulation actually can work to save energy and eliminate condensation inside the ducts. If you seal and insulate them first

 

Everything* you need to know about adding insulation to the outside of old homes with cold bones

Stop rot with house wrap​

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

Pennsylvania, New York, and Vancouver think so.

Mark the trusses before you unbundle them

Continuous exterior insulation means smaller studs and higher performance