Exterior OSB thickness

728 Views 6 Replies 5 Participants Last post by Gary in WA, Mar 17, 2016

Bgmac

Discussion Starter · Mar 16, 2016

My local code list 3/8 or 1/2 inch OSB on 16" OC studs for exterior walls. I am ready to hang 7/16" OSB thinking it falls in-between the sizes listed somewhat. Before I put nail to OSB, would 7/16" work? I am in Virginia, my county goes by state code. Thanks for any advice.

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Gary in WA

· #7 · Mar 17, 2016 (Edited)

Just be sure to leave the required gap between them, says right on each sheet. They may bubble off the wall, siding and all, later- otherwise. Also, run them vertically so you won't need the required shear blocking at all edges (exposed/no framing) for your wind area; corners and every 25' shear panels, check your special nailing spacing here also; http://ecodes.biz/ecodes_support/free_resources/Virginia2009/09Residential/PDFs/Chapter%203_Building%20Planning.pdf

Gary

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