this post was submitted on 02 May 2024
54 points (100.0% liked)

Home Improvement

9030 readers
2 users here now

Home Improvement

founded 1 year ago
MODERATORS
 

Renovating the bathroom and found these dark patches in the joists and roof lumber surrounding the old vent pipe. The PVC part is new.

Anything bad here? Anything we need to address?

you are viewing a single comment's thread
view the rest of the comments

No, it's not. You can drill holes through the center of a joist or rafter but the permitted diameter of the hole depends on the overall width of the board. Notching the edge (or in this case cutting most of the way through it) dramatically weakens the board since the edges bear most of the tension from the load.