On Jul 7, 9:43 am, Windswept@home (Clueless Mary) wrote:
By visual inspection, roofer diagnoses buckling in some of the plywood
sheathing and takes a down payment to buy supplies, including the
plywood sheathing.

How does roofer know the thickness of the sheathing without
ripping-off the shingles? Seems to me that he'll need to use the
same thickness to match the existing sheathing that has not buckled.
Thanks.

If the roofer has enough experience in your neighborhood, he probably
has a 90% confidence level what is the sheathing thickness. It's
still an assumption on his part. If the guy is contemplating just
guessing and going with it, that's not really a good sign. Did the
roofer go into your attic to verify what was going on with the
sheathing?

R