How to install osb sheathing installation instructions guide, roof deck OSB sheeting install tips

How to install osb roof deck sheathing. Installation instructions. installing OSB structural roof sheathing panels to a sloped shed Style overhead deck canopy

OSB which is Oriented Strand Board is a structural panel unlike conventional plywood which is laminated thin wood layers pressed and glued, OSB offers several unique benefits.

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First off OSB which is a structural panel can be installed in any direction and still maintain its strength opposed to plywood what you typically cross joists members left and right with the green.

Second OSB has a dry finish side and a laminated coated side. The installation is always nominated coated side facing the living area for the downside. The dry side is exposed to the exterior.

The reason for the lamination to face the interior is that it's a protective coating that prevents condensation from dry rotting the OSB panel.

Typically when installing OSB panels animals are step staggered at least two joist cavities from another as shown in the video

Typically as you progress upward after 1 course row of 4 foot is installed your next panel should be shifted left or right minimum of two Bay cavities 32in and panels should not but up laterally against each other. You want to try to maintain at least an eighth of an inch Gap which allows for expansion and contraction of the OSP product which prevents roof buckling in extreme Heats and humidity.

Since this particular shed style sloped roof is installed over top of a frame system where it's joist are based on 16in on Center there's no requirement for a Simpson spacer clip in between the joists cavity. In the case where joists are spaced 24 in apart then there would be a requirement to have a panel clip which is shaped like an H installed between the joist connecting the panels together and automatically providing a 1/8 inch expansion Gap in a lateral form.

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