What Thickness Of Plywood Is Used For Roofing

It is about 2 to 3 millimeters thick and is generally used indoors since it looks more decorative than thicker plywood boards.

What thickness of plywood is used for roofing.

Generally plywood comes in 4 by 8 foot sheets and in a variety of grades. Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood. The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an inch.

When this is the case experts recommend a 5 8 inch thick sheet. 3 ply is one of the most common types of plywood. Find plywood sheathing plywood at lowe s today. 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.

Keep in mind that the load of the roof still plays a role in the plywood thickness. The minimum thickness of plywood used for roofing is 3 8 th of an inch. Required sheathing thickness for roofing important factors. A flatter roof with rafters farther apart may need a thickness of up to inch.

5 ply is a versatile type of plywood that is about 4 millimeters thick. 3 8 should be replaced optimally but it would be better to use all the same thickness sheathing than to mix them. And this will reduce the life of the shingles tar paper and roof. The minimum plywood for roofing plywood is layers of wood.

Steeper rather than flatter roofs will have lesser load per sq. Shuttering plywood is another type of plywood but it generally isn t used in roofing. That s considered to be the minimum. Instead it is used to hold concrete whilst it sets.

This kind of plywood can be used on roofs with minimal load. If you mix thicknesses of plywood it will cause a problem eventually and the thicker sheathing will be noticeable probably within a month. Roof sheathing thickness unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. Plywood is made with three or more layers of thin wood glued together with the grain.

Osb and plywood come in thicknesses ranging from 5 16 to 3 4 inch and the thickness needed for a particular roof depends on several factors including rafter spacing expected load and roof. Many factors affect thickness.