Roof Plywood Thicknesses Mixed

Keep in mind that the load of the roof still plays a role in the plywood thickness.

Roof plywood thicknesses mixed.

You might be tempted to choose a inch thickness although it s unnecessary in most cases. It will support roof. Please understand that recommended metal thicknesses will vary based on the design and engineering of the metal product being considered that said here are a few general recommendations. Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood.

A 1 2 sheet is actually 15 32 thick. These recommendations are with paint. You can get plywood sheets with a length of up to 10 feet. The standard width is 4 feet.

Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. With edge support and the same snow load 3 8 inch osb can be used. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. Metal roofing thickness recommendations that include paint.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Exposed fastener corrugated steel roofing. Because the actual thickness may vary measuring the plywood is the only accurate way to determine its thickness. Plywood is often sold in 1 4 1 2 or 3 4 nominal thicknesses but the actual thickness is often 1 32 thinner.

Rafters that are slightly farther apart might require inch or 5 8 inch thick plywood. Sheets of 7 16 inch thick with no edge support can be used in an area where the snow load is 30 pounds per square foot.