If your roof has triangles and other shapes you ll need to use a calculator to find the square footage.
How many playwood is a squeer roof.
This basically calculates the number of sheets needed for a gable roof.
For most home improvement projects knowing how to calculate square footage is an important skill.
Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.
The average roof is 3 000 square feet or around 30 squares.
Roofing material is estimated by the square which is equal to 100 square feet.
The calculation is based on that the plywood or osb oriented strand board sheets are of a 4 x 8 size.
This comes out to about 94 sheets of 4 x 8 plywood.
Divide the roof s area by 32 32 is the total area of one sheet of plywood to find this figure.
For example if your roof is 3 000 square feet divide 3 000 by 32.
See the image below for more explanation on rise run and pitch.
From flooring to paint to landscaping square footage is going to be a necessary measurement to get the right amount of materials for your project.
A 4 8 sheet of plywood is 32 ft 2.
Once you have the area you can divide by the area of a sheet of plywood to find the number of sheets needed.
That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.
Many homes have an asphalt shingle roof but some have wood metal tile and slate which can be more expensive.
A typical 4 foot by 8 foot sheet of plywood covers 32 square feet.
The square footage of a hip roof area is identical to the square footage of a gable roof of the same measurements.
A 4 8 sheet of plywood is 32 ft 2.
If your roof area is 1 600 square feet 1 600 divided by 32 will mean you need about 50 sheets to cover the roof.
Most roofs will be sheathed in plywood at least 3 8 inch thick.
A 12 in 12 pitch is a steep 45 degree angle roof.
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.
800 32 25 sheets.
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.
So dividing the area of the roof by 32 will give you the number of sheets needed.