How Thick Osb For Roof Sheathing

Several factors must be considered when determining appropriate roof sheathing thickness such as the.

How thick osb for roof sheathing.

Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood. Tandg oriented strand board is ideal for subfloor construction and structural usage in humid conditions. Roof sheathing or decking is one of those elements.

Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. X 95 75 in 920924 the home depot. With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible. T g oriented strand board common.

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. A roof system consists of several elements working together to protect the home. 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. Great choice for a professional builder.

Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should. Thicknesses range from 5 16 to 3 4 inch and the proper one to use. Roof sheathing attaches to the surface of the rafters or trusses to form the structural skin of the roof. Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick.

Required sheathing thickness for roofing important factors. Loads will vary with the. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.