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I’m remodelling an upstairs bathroom and have found that the previous plumber cut a floor joist to make room for the tub drain. The floor joist needs replacing. Am I better off to remove a portion of the sub floor and replace it from above or try to get at it from below?
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Not enough info here -- do you want to keep the existing bathroom floor? Is this over a closet, or a nice large room with a good ceiling? If you're demoing the floor anyhow, go from the top. Also, instead of replacing the joist, sister it -- put the new solid piece alongside the existing butchered one, and nail them together. This saves you the work of getting the old wood out, and of attaching the ceiling to the new joist.
-- J.S.
*It can be done either way. Whatever is easier for you to do.This one is a little like, "Should I wear red or green undeerwear on Christmass day?" It depends on what you like on site.
*Thanks for your input. I'm going from the top and will try to replace the entire joist if possible. If not I will sister as long a piece in as I can and will bolt and glue it to the cut joist.
*Hi,you've probablyalready done the job by now, but if you haven't don't remove the joist as it will affect the ceiling below. Sistering one along side will do the job. A little bit of construction adhesive and screws will do the trick!
*Please don't use screws!Especially drywall screws!!They have no sheer strength and are too thin to gain much purchase when the lumber dries out. Code calls for bolts no further apart than, I believe, 4', and 2' from the end. You do not need construction adhesive, but it will not hurt if you want to use it.
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I'm remodelling an upstairs bathroom and have found that the previous plumber cut a floor joist to make room for the tub drain. The floor joist needs replacing. Am I better off to remove a portion of the sub floor and replace it from above or try to get at it from below?