APA plywood or APA rated sheathing?
APA plywood or APA rated sheathing?
(OP)
Just wondering how others specify wood sheathing panels on your drawings? I always specify APA rated sheathing for either shear walls or roof deck. The sheathing can be either plywood or OSB as long as it is APA rated. If you specify APA plywood, do you get requests to approve APA rated OSB?






RE: APA plywood or APA rated sheathing?
DaveAtkins
RE: APA plywood or APA rated sheathing?
OSB panels are included in this category.
RE: APA plywood or APA rated sheathing?
RE: APA plywood or APA rated sheathing?
In most areas of the US, outside the west coast, Structural I Plywood is almost impossible to get. In the upper midwest Structural I OSB is usually available.
RE: APA plywood or APA rated sheathing?
So, if the request comes to use OSB in place of plywood (this usually comes through value engineering), I say it if fine structurally, but relay my concerns about the swelling, and let the owner and architect make the decision.
RE: APA plywood or APA rated sheathing?
RE: APA plywood or APA rated sheathing?
Then I had non APA rated >>exterior<< grade plywood delaminate after a year or so of undercover outdoor service. At most Maybe it got rained on once, but maybe it didn't. It seems those folks who wished to skip the certification were convinced they also "knew" some manufacturing steps were un-necessary and skipped those as well.
I had no one to blame but myself.
RE: APA plywood or APA rated sheathing?