Estimation Tips
Good estimates come from good measurements and honest waste allowances. These habits keep you from running short or over-ordering.
Measure Twice, Add Once
- Measure the longest and widest points of irregular spaces.
- Break complex areas into rectangles and add them.
- Write down every dimension before you start math.
Convert Carefully
Mixing inches and feet is the number one source of estimating mistakes. Convert everything to one unit before multiplying.
Use Consistent Waste
| Material | Typical Waste |
|---|---|
| Tile and flooring | 10% |
| Lumber, decking | 10% |
| Bricks and blocks | 5-10% |
| Concrete | 5-15% by form complexity |
| Paint | 10-15% (touch-ups and trim) |
Round Up and Order Complete
Always round quantities up to the next whole bag, board, yard or carton. For anything shipped or mixed, ordering short is the expensive mistake.
Tie Back to a Calculator
Run your numbers through the matching MyBuilderBase calculator, then spot-check against the rules above.
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Related Calculators
Disclaimer: Figures on this page are general reference information. Always verify exact requirements with your project specifications and a qualified professional.