How Thick Osb For Roof Sheathing

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How thick osb for roof sheathing.

You need to find a sheathing with a span rating of at least 32 16 which means either 15 32 or 1 2 thick osb. 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. Roof sheathing attaches to the surface of the rafters or trusses to form the structural skin of the roof. Loads will vary with the.

Several factors must be considered when determining appropriate roof sheathing thickness such as the. Required sheathing thickness for roofing important factors. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should. Osb roof decking thickness 7 16 1 2 or 5 8.

That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Tandg oriented strand board is ideal for subfloor construction and structural usage in humid conditions. T g oriented strand board common. Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick.

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. Thicknesses range from 5 16 to 3 4 inch and the proper one to use. Keep the 16 oc go with 1 2 osb and add an extra clip in each space. A roof system consists of several elements working together to protect the home.

Roof sheathing or decking is one of those elements. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood.