There is about a metre of rot and mold. The rot is quite extensive as I can pull large chunks of the joist with my hand. There is a wall sitting almost directly beneath the joist, however it is not load bearing. Only 1/3 of the joist sits on the underlying wall which has lead me to the doubts...
I am renovating a rental property. In the bathroom we have found severe wood rot in 1 of the 3 main ceiling joists. The rot goes through 2/3 of the joist (4 2x10 with 1x6 on each side) on the right side of the joist, approximately where the rot ends is the bathrooms vent pipe which is what makes...