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?
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?
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.