Roof Plywood Thicknesses Mixed

You can get plywood sheets with a length of up to 10 feet.

Roof plywood thicknesses mixed.

Exposed fastener corrugated steel roofing. A 3 4 sheet is actually 23 32 thick. 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. It s the standard for spacing of 24 inches in the rafter although as mentioned a 5 8 inch thick is more ideal.

You might be tempted to choose a inch thickness although it s unnecessary in most cases. A 1 2 sheet is actually 15 32 thick. Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood. These recommendations are with paint.

Because the actual thickness may vary measuring the plywood is the only accurate way to determine its thickness. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Metal roofing thickness recommendations that include paint.

Plywood is often sold in 1 4 1 2 or 3 4 nominal thicknesses but the actual thickness is often 1 32 thinner. It will support roof. The standard width is 4 feet. 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.

Rafters that are slightly farther apart might require inch or 5 8 inch thick plywood. With edge support and the same snow load 3 8 inch osb can be used.