Home > How To > Framing > Q&A: Which Side of OSB Goes Up? Framing Q&A: Which Side of OSB Goes Up? By Paul Fisette Login or Register to download the PDF version of this article. (141.99 kB) A.Corresponding Editor Paul Fisette responds: The rough side is installed facing up, in order to provide a safer walking surface for workers during construction. Login or Register to read the full article.