Barry Irby
I replaced five sheets of plywood today. Also planning to replace the ducts downstairs. There are about five more I could replace.

The problem is that the pee ran under some of the walls. Without going to extreme measures like jacking the house up I can't get the plywood out from under the walls.

I think I will cut away the rest of the obvious stuff and replace what I can and then seal it. I am still wondering where else it might be hiding.