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Re: Roof Plywood and Rain

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I agree with Stan's recommendations.  Get an expert.  You might
pull a couple of nails (preliminarily) and check for loss of
diameter.  What's the water content of the framing/sheathing?
All of these will play into whether or not you need to replace
some/all of these elements.

In addition to reviewing issues of strength loss, you might
have someone investigate to see if there has been any growth of
mold/fungus in the framing or sheathing.  Not to sound too much
like a lawyer, but the potential for a lawsuit exists if mold growth
appears down-the-line and no effort was made to investigate the
cause of the "gray" plywood, whether the plywood graying was
mold-related or not.

Just my $0.02,

Charley

--
Charles Hamilton, PhD EIT               Faculty Fellow
Department of Civil and                 Phone: 949.824.3752
    Environmental Engineering           FAX:   949.824.2117
University of California, Irvine        Email: chamilto(--nospam--at)uci.edu




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