Insulation Installation: Where to Insulate in Your Home
Not sure where exactly to insulate? Probably in more place than you think. In addition to walls and attics, insulation should be installed in ceilings with unheated spaces, basement walls, floors above vented crawl spaces, cathedral ceilings, floors over unheated garages or porches, knee walls, and in between interior walls—especially bathrooms—as well as ceilings and floors. The goal is to create a consistent wrap around the home, a “thermal envelope,” with no penetrations.
But, not every area is easily accessed. Ceilings and attics are always good places to start, both because they are accessible and because more heat escapes through the roof than any other part of the home.