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I'm new to the discussion forum here. I'm a furniture and cabinet maker in California, and have a construction project going on that I wanted to ask some questions about. The project is a second-story addition over our garage -- I'm not building it, just to clarify, we've got a contractor doing the work.
So here's the issue: We got caught by a series of rainstorms before we could get the roof finished, and despite the contractor's assurance before we started the job that he'd be able to tarp and protect the job in case of bad weather ("Don't worry, it'll be fine"), the roof sheathing and second-story subfloor got soaked by several storms. Leaving aside our irritation with the contractor about not tarping the job, where does this leave us with regard to continuing work?
There are two issues here. The first, and most pressing, is the roof. We'd obviously love to get that roof papered and closed up ASAP, but not until it's actually dry. The contractor wants to get a crew out here Friday (the day after the next set of storms is due, btw), which would mean papering over really wet wood. Just how common is this, and just how bad is this? To me, this seems like a major invitation to mold and rot. Would letting the roof dry before finishing be sufficient, or is the plywood, once soaked, unusable and in need of replacement?
Issue number two: the floor. The flooring that will be going over this subfloor is 1" thick VG Doug fir (roughly 4" wide t&g). This is intended as a dance floor, so the floor needs to be _really_ sound, no bumps or squeaks or wierdness. At this point, due to the fact that there have been standing puddles of water on the subfloor, there are pockets of de-lamination all over the place. We could, once the roof is complete and the building is closed in, get a de-humidifier in there and really cook the place dry before installing the flooring, but what about all those plywood bubbles? And in case you're wondering, yes, the I-joists holding up the subfloor also got wet (primarily the plywood caps, not so much the OSB ribs). Oy.
What are the industry standards about plywood getting wet? I'm interested in hearing both the "here's what folks usually do" and the "here's what the manufacturers tell you" side of things. At this point, all I'm hearing is what my contractor is telling us, which I suspect is motivated by a desire to close this job up and flee.
I look forward to hearing from all you buildy-types out there.