Which side of OSB sheathing goes up?
OSB roof panels should always be installed with the grade stamp facing into the attic and the screened surface (with the nail guide lines) facing up. 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.
Should OSB sheathing be installed vertically or horizontally?
If the height of a wall is less than 8-feet, install the plywood (or OSB) vertically. If the height of a wall is greater then 8-feet, install the plywood (or OSB) horizontally.
What is the nailing pattern for OSB sheathing?
8d
Attaching the Panels A typical nailing pattern for a standard OSB exterior wall is to insert one 8d nail every six inches along seams and in every stud that lies beneath the plane.
What happens if you install subfloor upside down?
Upside-down Installation: Panels may be sanded on one or both sides. Installing some panels with the trademark side up may result in a slightly uneven surface. If bulk water is present on the subflooring panels, drill drainage holes or sweep the water off.
Which side of OSB faces out on walls?
The smooth side has a better moisture resistance and will ultimately provide better performance against weather. Facing the board smooth side out will maximize its ability to keep moisture out of the structure.
Does sheathing have to end on a stud?
Correct placement of the sheathing is when the edge of the sheet lines up perfectly with the outer wall, and the other end of the sheet is on the center of a stud. If the edges don’t line up, use a construction level to determine if the corner of the wall is off or the stud is not plumb.
Does sheathing go over sill plate?
no, typically the sheathing come down about an inch below your sill plate so that it covers the plate-to-foundation connection.
Why is OSB smooth sided?
The smooth side has a better moisture resistance and will ultimately provide better performance against weather. Facing the board smooth side out will maximize its ability to keep moisture out of the structure. It is simple why manufacturers create roughness on OSB boards.
What size OSB for roofing?
Roof sheathing products come in a variety of different thicknesses, which are chosen based on the weight of the roof and the distance between joists. For most lightweight roofing materials, use 5/16-inch plywood for spans up to 20 inches, and use 1/2-inch sheets for spans up to 32 inches.
Is OSB good for roofing?
Every building authority in the United States, except for one, allows the use of OSB for roof sheathing. It has better structural integrity than plywood, it’s less expensive, and contemporary products are just as able to repel rain and moisture.
What is an oriented strand board?
Oriented Strand Board ( OSB ) Oriented Strand Board (OSB) is a type of engineered wood similar to particle board that have a rough and variegated surface with the individual strips.