Osb Roof Decking Which Side Up

The second number is the maximum o c.

Osb roof decking which side up. Support spacing when the panel is used for subflooring. Be particular about your framing you cannot install your osb sheathing directly. Avoid putting osb on wet roof trusses. Roof trusses must be dry when sheathing a roof with osb to prevent mold growth in the roof and coverage gaps as the trusses dry and shrink.

One side has a polyurethane coating that shields the object from natural elements such as moisture but the opposite side does not have a finish at all. Or for floor sheathing over supports spaced up to 16 inches o c. Install osb textured side up. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.

Lay sheets in rows with the long edge horizontal to the roof bottom. Thicknesses range from 5 16 to 3 4 inch and the proper. The textured surface helps flashing and waterproof underlay stay in place effectively. Also by installing the stamps down the rougher side of the panels is kept upward which helps with worker traction on the jobsite.

The minimum osb panel size is 24 inches in any direction and each sheet end must rest on a rafter. However structurally there is no difference in how the panel will perform whether the side with the grade stamps is installed up or down. Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8. Avoid installing osb with the textured side down.

For pricing and availability. For pricing and availability. A panel marked 32 16 may be used for roof sheathing over supports spaced up to 32 inches o c. Watch this now to learn how to avoid this same pr.

The span rating on floor span panels appears as a single. Provide a 1 8 inch gap. When the grade stamp is covered by roofing the building inspector will not be able to confirm that the correct osb roofing panel was used. Spacing in inches for roof sheathing.

Osb sheathing has different textures on both sides as well. I m halfway though sheeting the roof of my shipping container shop and already need to redo some of it.