In every house project, there's always at least one time, after you've found something, you ask yourself "what were they thinking?"
Exhibit A: Tub drain trap and floor joist
What's wrong with this picture?
- That's a slip-type P-trap. It belongs under a sink, not buried in an inaccessible location
- Floor joist was seriously over-notched. Whoever did this bathroom circa 1990 sistered the joint with a 2x6 on the back side. As far as I can tell, the repair is fairly sturdy and has worked pretty well...BUT... it DOES explain the plaster cracks in the ceiling below. I will repair with a strap across the top and add a new sister.
Exhibit B: Poorly-supported plywood panels
The subfloor consists of 3/4" tongue-and-groove pine flooring. When the bathroom was installed, the pine boards were cut to provide access to the joists to run plumbing. Unfortunately, the plywood is not the same thickness as the remaining subfloor. I'm concerned about flooring integrity and will tie in new tongue-and-groove flooring. It's a bit laborious but will give me peace of mind long term, especially considering how one of the plywood panels partially yielded when I stepped on one...oops.
EDIT: 21Jan2023: The issue with these plywood panels is not their integrity, it's the lack of support. They were supported by 3/4 inch of the floor joists on each side. I'm putting plywood in as patches in some spaces, though those will be blocked across the joists to provide more support, especially in areas of observed water damage (see the area around the toilet flange, as an example). I'll use tongue-and-groove flooring in some areas but not everywhere.
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