Then do the same thing for the width.
How many sheets of plywood are in a square.
One sheet 32 ft.
Once you have the area you can divide by the area of a sheet of plywood to find the number of sheets needed.
For more complicated shapes see the instructions below.
How many 4 x 8 sheets of plywood do i need.
Estimate the number of sheets needed for sheathing a wall or floor with plywood or osb.
The most common size for plywood sheets is 4 x 8 feet followed by 5 x 5 feet.
For example a standard sheet of plywood 8 feet long and 4 feet wide has a surface area of 32 square feet.
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.
If your roof area is 1 600 square.
800 32 25 sheets.
The calculation is based on that the plywood or osb oriented strand board sheets are of a 4 x 8 size.
Covering 230 square feet requires eight sheets.
The many types of plywood can differ in materials number of layers rating and grade.
I use my table saw sled.
For example if your roof is 3 000 square feet divide 3 000 by 32.
Use the drop downs below to select a length in feet.
This basically calculates the number of sheets needed for a gable roof.
This comes out to about 94 sheets of 4 x 8 plywood.
This calculator does not simply divide the total square footage by 32.
I have learned that the factory edge is not straight and sheets are not square.
I will cut my widths along the 8 lengths and then us my sled to cut the 34 5 cutting a 1 4 over on my first cut and then setting to 34 5 and cutting the actual size.
It figures how many pieces long then how many wide.
A 4 8 sheet of plywood is 32 ft 2.
I just treat it that way.
So dividing the area of the roof by 32 will give you the number of.
Divide the total roof area by 32 to get the number of sheets you will need to cover the 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.
If your roof has triangles and other shapes you ll need to use a calculator to find the square footage.
Number of sheets needed based on 4 x 8 sheet size.
The square footage of a hip roof area is identical to the square footage of a gable roof of the same measurements.
Sometimes you will end up with leftovers that are too small to use and you may need additional sheathing material.
Estimate the amount of plywood or osb needed for sheathing a roof.
230 divided by 32 equals 7 19.
The number of sheaths needed is based on square footage of the area and the square footage of one sheath of plywood.
