How To Figure Plywood For A Roof

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.

How to figure plywood for a roof.

This basically calculates the number of sheets needed for a gable roof. Roof sheathing hip roof imperial calculator estimate the number of sheets of plywood or osb that are needed for sheathing a hip roof. Divide 1 320 by 32 to get 41 plywood sheets. 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.

Things you will need. A 12 in 12 pitch is a. The square footage of a hip roof area is identical to the square footage of a gable roof of the same measurements. Multiply the length of the roof in feet by the width of the roof in feet to find the area of the roof in square feet.

Once the area is known divide by the area of a 4 8 sheet to find how much sheathing is needed. Follow theses guidelines for a closer estimation. One sheet 32 ft. 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.

The calculation is based on 4 x 8 sheets 32 square feet each. The calculation is based on that the plywood or osb oriented strand board sheets are of a 4 x 8 size. 800 32 25 sheets. To find the amount of plywood needed to cover a roof start by finding the area of the roof.

Calculate how many sheets of plywood are needed. To accurately calculate the area of your roof you must first determine its slope or pitch. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. A 4 8 sheet of plywood is 32 ft 2.

Divide the roof s area by 32 32 is the total area of one sheet of plywood to find this figure. Find the average length by measuring at the center of. You should be prepared to have about 15 percent waste so multiply your figure by 1 15. For example if your roof is 3 000 square feet divide 3 000.

Find the area of a roof. Solving for the number of sheets of plywood necessary for more complicated shapes requires at least some estimating. This will give you the total number of sheets to buy. Take the roof s total square footage and divide by 32.

One 4 by 8 foot sheet of osb or plywood is 32 square feet.