Re: Damaged Joists Need Replacement or Sistering - Which and How?
Sistering is definitely easier than replacing, especially when you consider that the flooring above is nailed to the old joists. Sistering is basically sliding a new joist in beside the old one. If the old joists are sagging or the ends are damaged you may have to jack the old joist up then nail the sister joist to it. Going green is great but sometimes not appropriate and in this case I would suggest you go with pressure treated lumber. It will be in contact with concrete or stone and installed in a damp basement. Because of the thickness of your old joists you may even have to place a sister on each side of the joists.
Be sure you live your life, because you are a long time dead.-Scottish Proverb