How Thick Osb For Roof Sheathing

T g oriented strand board common.

How thick osb for roof sheathing.

X 95 75 in 920924 the home depot. Keep the 16 oc go with 1 2 osb and add an extra clip in each space. 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. 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. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Thicknesses range from 5 16 to 3 4 inch and the proper one to use. 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.

Roof sheathing or decking is one of those elements. Required sheathing thickness for roofing important factors. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should. Tandg oriented strand board is ideal for subfloor construction and structural usage in humid conditions.

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 roof decking thickness 7 16 1 2 or 5 8. With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible. A roof system consists of several elements working together to protect the home.

Great choice for a professional builder. 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 attaches to the surface of the rafters or trusses to form the structural skin of the roof.