The Cost of Sheathing - Plywood or OSB

Plywood and OSB (oriented strand board) are the most common wall sheathing materials. It is easy to see the cost difference for one sheet, but sometimes, you need to know the overall cost difference to see the big picture. In general, OSB tends to be cheaper than plywood.


Length feet inch
Width feet inch
Plywood Cost $
OSB Cost $

Results:

Area ft²
Number of Sheets #
Sheathing Cost Using Plywood $
Sheathing Cost Using OSB $

Calculator

  1. the length in feet and inches
  2. the width or height in feet and inches
  3. the price of one sheet of 4' x 8' plywood
  4. the price of one sheet of 4' x 8' OSB (oriented strand board)

The Results

  1. square feet of wall or floor area
  2. number of sheets needed
  3. cost of sheathing if you use plywood
  4. cost of sheathing if you use OSB

Example:
A roof with a length of 40 feet 6 inches and a width of 18 feet 4 inches 
Calculate the roof's square footage;
40' 6" * 18' 4" = 40.5 * 18.33 = 742.5 square feet
This roof has an area of 742.5 square feet

Calculate the number of sheets needed;
A 4' x 8' sheet = 32 square feet
742.5 ÷ 32 = 23.2
It will take 23.2 sheets to cover this section of the roof.
(There is no allowance for waste included.)

Wall and Floor Framing

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