When floor joists are installed, a board, either a 2×10 or a 1×10, is nailed across the ends of the floor joists to support them in an upright position until the sub-flooring can be installed.

Question: Should we insulate the rim-joist cavities of a crawlspace foundation? I am a builder, and where I live the codes require insulation, but I have discovered that the insulation ...

Depending on your skills — and if working in small, dark areas is not a problem — then yes, it’s easy to insulate the rim joists. A typical floor joist is a 2- by 10-inch joist set 16 inches ...

Q: Should we insulate the rim-joist cavities of a crawlspace foundation? I am a builder, and where I live the codes require insulation, but I have discovered that the insulation ...

Question: What are rim joists, and how do you insulate them? Our home was recently inspected and the buyer asked that we pay for the repairs. Is this something I ...