How Many Sheets Of Plywood Do I Need For Roof

The calculation is based on that the plywood or osb oriented strand board sheets are of a 4 x 8 size.

How many sheets of plywood do i need for roof. A typical 4 foot by 8 foot sheet of plywood covers 32 square feet. Divide the total roof area by 32 to get the number of sheets you will need to cover the roof. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Divide by the total square footage by the square footage of a sheet of plywood to find the number of sheets required to cover the space.

A 4 8 sheet of plywood is 32 ft 2. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. Estimate the amount of plywood or osb needed for sheathing a roof. Divide the roof s area by 32 32 is the total area of one sheet of plywood to find this figure.

One sheet 32 ft. Add an additional 10 for waste and mistakes. So dividing the area of the roof by 32 will give you the number of sheets needed. For example if the area to be covered in plywood is 800 ft 2 then 25 sheets of plywood will be needed to cover it.

If you know you ll be using 4 foot by 8 foot sheets of plywood use the total roof area to find the set number of sheets you ll need. For example if your roof is 1 500 ft 2 then it will take 47 sheets of plywood to sheath it. If your roof area is 1 600 square. 1 500 32 46 875 sheets.

For example if your roof is 3 000 square feet divide 3 000 by 32. This basically calculates the number of sheets needed for a gable roof. This comes out to about 94 sheets of 4 x 8 plywood. 800 32 25 sheets.