Thckness Of Roof Osb Roof Sheathing

We re in dallas so we don t engineer for tremendous live loads for an asphalt shingle and we feel comfortable with 16 oc rafter spacing and 7 16 osb decking.

Thckness of roof osb roof sheathing. Osb panels often have lines at 16 and 24 in. Osb roof decking thickness 7 16 1 2 or 5 8 currently we space rafters 16 oc and use 7 16 osb with h clips. Required sheathing thickness for roofing important factors. Intervals so you know where underlying studs rafters and joists are for nailing.

If your roof is more on the flatter side then it s expected to have a heavier load. Several factors must be considered when determining appropriate roof sheathing thickness such as the. 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. Loads will vary with the pitch of the roof.

Thicknesses range from 5 16 to 3 4 inch and the proper one. For pricing and availability. Osb is widely used as roof decking material. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.

Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. Using osb osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. Osb has its advantages. Some panels have a textured surface which makes them less slippery when used for roof sheathing.

Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8. A homeowner recently wrote and asked me the following regarding osb roof decking. Most roofs will be sheathed in plywood at least 3 8 inch thick. In our area 1 2 in.

With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible. For pricing and availability. This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesn t have too much load. Osb sheathing costs a few dollars less per sheet than 1 2 in.

That s considered to be the minimum.