On 9/28/2020 1:58 PM, croy wrote:
Is OSB a good choice for exterior shed siding (painted)?

Be sure to paint the edges, that is the most vulnerable area. See below.

OSB's other moisture challenge has to do with dimensional stability - in
other words, OSB can irreversibly swell, especially at the edges, when
it gets too wet. This is not a decay issue, but swelling can cause other
difficulties in construction. ... In addition, OSB is bonded with
waterproof adhesives.