I’m doing renovations in an old kitchen. I removed the ceiling as it was damaged, old and nasty. I found that when some prior owner renovated the bath above, they cut into the joists to add plumbing. The cuts are minor to cut right through in places. They did a poor job of attempting to scab a 3 foot section of 2x8 for support on one joist (the cut through one) and nothing on the other 3 joists. ( I guess I shouldnt worry, they only installed a large tub above the 4 joists they compromised!!!!)
The joists are 2” x 8” x 18” long (a full 2”x 8”, not 1.5” x 7.5”). The cuts are about 1 foot from the wall.
Four joists have been compromised.
What I am looking for is a solution to re-support them.
My initial thought was to build a header that would run below the 4 joists that would be supported by two studs on each end (there is a door in the wall below this point, so I couldn’t have studs all along the header). I’d prefer not to do this solution as the header would cause problems with cupboards.
My other thought was to remove the plumbing, scab 6 foot lengths of 2x8 to the existing joists using bolts then add the plumbing back in. I’d still have a concern with this as 4-5 inch holes would still be needed for the toilet drain. What if I were to scab 2 2x8s on each side of the joist?
Hopefully the pictures below will help show the situation.
Any thoughts would be appreciated. (The wiring will be removed and done right!)