Osb Roofing Which Side Up

Install osb textured side up.

Osb roofing which side up.

Avoid installing osb with the textured side down. A lot of builders are considering osb sheathing not just because of its strength but because it is inexpensive. Thicknesses range from 5 16 to 3 4 inch and the proper. 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.

I m halfway though sheeting the roof of my shipping container shop and already need to redo some of it. Structurally it doesn t make a difference but if the grade stamp faces up it will be covered by the roofing material and the building inspector will not be able to confirm the right osb panel has. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. The minimum osb panel size is 24 inches in any direction and each sheet end must rest on a rafter.

Watch this now to learn how to avoid this same pr. The textured surface helps flashing and waterproof underlay stay in place effectively. Avoid putting osb on wet roof trusses. Osb sheathing is a special type of board that is well engineered being composed of strands of compressed wood which are layered and unionized together using a resin.

The osb roof panels should be installed with the grade stamp facing into the attic and the screened surface with the nail guide lines facing up. For example it does not have voids or knots or gaps and laps. It differs from commonly used plywood in many aspects. Lay sheets in rows with the long edge horizontal to the roof bottom.