How Thick Osb For Roof Sheathing

Loads will vary with the.

How thick osb for roof sheathing.

For the curious 7 16 osb has a span rating of 24 16 and with supports every 24 inches is good for a roof live load of 40 psf pounds per square foot with a 10 psf dead load. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. Roof sheathing or decking is one of those elements. Roof sheathing attaches to the surface of the rafters or trusses to form the structural skin of the roof.

Thicknesses range from 5 16 to 3 4 inch and the proper one to use. Great choice for a professional builder. T g oriented strand board common. Osb roof decking thickness 7 16 1 2 or 5 8.

A roof system consists of several elements working together to protect the home. Keep the 16 oc go with 1 2 osb and add an extra clip in each space. It spans the rafters to support the roofing and in the case of panel sheathing such as plywood or osb it acts as a diaphragm with the walls to resist horizontal loads. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should.

In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible. Required sheathing thickness for roofing important factors. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.

Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood. Several factors must be considered when determining appropriate roof sheathing thickness such as the. Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick.