Formula and Assumptions
Needed length = perimeter - doorway openings, adjusted for waste.
Actual conditions, local rates, product labels, and contractor recommendations can change the final quantity or cost.
Example Calculation
A 14 x 12 ft room with two doorways and 12 ft boards needs about 5 boards.
Tips
- Measure each wall for accuracy.
- Add extra for miter mistakes.
- Include closets if they get trim.
FAQ
What doorway width is assumed?
The estimate subtracts 3 ft per doorway.
Does this include casing?
No, casing is separate trim.
Should I paint before installing?
Pre-priming can save time.
Can I use metric boards?
This version uses feet.