How Thick Should Osb Be For Roofing

Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.

How thick should osb be for roofing.

However you may need to consider bolstering the plywood thickness for a roof that has a higher load. 8d ring shank nails should be used instead. The most common materials for this are oriented strand board osb or plywood both formed of layers of wood bonded into a panel. In this case plywood should be a minimum of 3 8 inch thick.

At least 3 8 inch thick. The thickness required by josh s. A roof that lays practically flat will have a much heavier load than a steeper roof that allows rain snow and ice to roll right off. Standard roof sheathing which consists of 4 by 8 sheets of plywood or oriented strand board or osb is 1 2 inch thick and attaches directly to the roof rafters or the roof trusses.

An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof. Oriented strand board osb vs plywood family handyman osb roof sheathing panels georgia pacific blue ribbon 8 tips for getting the best out of your oriented strand board osb which way should you install osb on a roof norbord north roofing plywood sizes material options thickness calculations osb oriented strand board common 15 32 in x 4 ft 8 actual. Osb roof decking thickness 7 16 1 2 or 5 8 if were using osb we get 9 16 we dont worry about getting both 7 16 and 9 16 for walls then the roof we just get all of the same. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.

Thicknesses range from 5 16 to 3 4 inch and the proper. With this thickness any deflection under dead loads only the weight of materials only should prove to be imperceptible. 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. Sheathing should be a minimum of 19 32 inch thick.

The typical thickness range for sheathing is 3 8 to 3 4 inch.