How to Estimate Paint, Tile & Roofing Costs
Measure once, add a waste margin, and avoid buying too little.
Last updated: 2026-06-04
Always add a waste margin
Cuts, breakage, and mistakes mean you need more than the bare area — usually 10% (more for diagonal or complex layouts).
Steps
- Measure the area accurately
- Add the waste percentage
- Divide by coverage (paint) or tile/sheet size
Calculators to use
Estimate only — verify with a contractor.
Related
Related categories
Content is educational and indicative, not professional advice. Verify details before any important decision.