I bought a new to me TT that is in really great shape and had very few areas of de-lamination. I noticed that the dealer the folks I bought it from who they got the unit from a year ago, went over it ...
Do holes in the floor need to be sealed up? There is a hole next to our furnace for the ducts into the underbelly space and it's big enough to throw a cat through it. Plus there are various holes for plumbing into the underbelly.
Is there a suggested CFM? We have two Fantastic fans and it would be nice if that does the job.
I want to start doing this annually. I like the idea of using a pass-through door opening.