Tips on Measuring for Drywall
Before you begin, take the room measurements in the list below round to the nearest foot. If you have sloping walls, follow the special case instructions on how to determine this square footage. A 10 percent waste allowance is automatically added to the total.
1. Wall Height
Measure from floor to ceiling.
2. Wall perimeter for areas you plan to drywall
Measure the length of each wall. Add all length figures together to obtain the total horizontal distance, or perimeter.
3. Ceiling width and length
Omit if you do not plan to drywall your ceiling.
4. Excluded sections
Measure the height and width of each area separately. Add all widths into one total. Add all heights into a second total.
5. Sloping walls
Sloping walls form a triangular wall space. To calculate a triangle’s square footage, multiply the length of the wall at the base of the triangle by its height and divide by 2.