Estimate for Commercial Drywall
Getting enough supplies for a commercial project is crucial. Too much can waste a client's money and not enough could cause the project to fall behind schedule. You want to get exactly enough material to complete the project with a little extra to cover unforeseen situations. Correctly estimating drywall can be time consuming. You must know the square footage of each area to be covered and what size drywall sheets to use. Measuring the area and panel size are the most important parts in estimating the amount of drywall needed.
Instructions
Measuring and Estimating
1. Use a tape measure to get the length and height of each wall. Write down each measurement with length first. For example, if the wall is 12 feet 6 inches long and 10 feet high, write 12.5 X10.
2. Measure all large openings like doors and windows. Don't worry about small openings like electrical boxes, and don't forget to measure the ceiling if it will be drywalled. Verify the ceiling height in each room, and note all height changes. Look at the interior elevations to check for obstacles easily missed on the floor plan.
3. Multiply the measurements to get the square footage for each area. For example, 12.5 feet X 10 feet = 125 square feet and 14 feet X 10 feet = 140 square feet.
4. Add all those numbers together. For example, 125 square feet + 140 square feet = 265 square feet.
5. Subtract the square footage of the openings from the square footage of all the areas. A window that measures 3 feet by 6 feet is 18 square feet. Subtract 18 square feet from 265 square feet to get 247 square feet.
6. Add 10 percent for waste allowance. This is the total square footage needed. So 24 square feet + 247 square feet = 271 square feet total.
7. Divide the total square feet needed by the square feet in each drywall panel. There are different sizes of drywall sheets available. A 4-by-12 feet panel has 48 square feet of coverage. Divide the previous example of 271 square feet by 48 square feet. It comes out to 5.65 panels. Round up all decimals. In this example, you will need six panels to complete the job.
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