Recent Q&A

• Floor insulation above crawl space

  Hello,

• Improve efficiency and comfort of this room?

  Hello, Please see the 2 attached pictures of a room that I would like to improve the efficiency of. The room is between the garage and the main house. I…

• Cathedral ceiling efficiency retrofit

  I live in NH (zone 5). I am trying to make some efficiency improvements to a roughly 14ft by 20ft room with a cathedral ceiling that is 14ft at the…

• 拙劣的weatherization retrofit

  My weatherization contractor is supposed to follow the BPI (building performance institute) standards for installation. At least, this is what my contract states. The standards that I found on the…

• Dense packing an eyebrow roof

  I have a small eyebrow roof below a shed dormer on the back of my cape style house. The dormer runs for about 25 feet across the back of the…

• Rim joist insulation

  I insulated and air sealed my rim joists using 2 and 3/4 inches of polyiso along with one part foam around edges plus an inch or a bit more of…

• Rim joist thermal barrier

  The rim joist in my unfinished basement is insulated with 3 inches of rigid polyiso along with one part spray foam to air seal around the edges. My understanding is…