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Concrete Repair & Resurfacing Calculator
Updated Aug 25, 2026 Reviewed Aug 25, 2026
Estimate thin concrete overlays, multiple repair patches, product packages, bonding agent and cost with separate verified yields.
Concrete renewal takeoff
Enter overlay surfaces, repair patches and verified product yields
Result
Calculation summary
Enter values to see the result
Your result, breakdown, assumptions, and warnings will appear here.
Repair preview
Existing slab, overlay and patch volume
Overlay area
20 m²
Repair patches
0
Total material packages
4
How to use this calculator
- 1Choose overlay, repairs or both.
- 2Add overlay surfaces and installed thickness.
- 3Add each repair patch and average depth.
- 4Enter separate yields, waste, bonding coverage and prices.
Formula
Volume = area × installed thickness
Overlay yield uses coverage at reference thickness; repairs use volume per package.
Calculation steps
- Calculate net overlay area and volume.
- Calculate each patch volume.
- Apply waste.
- Divide by matching yields.
- Round packages and bonding containers upward.
Worked example
QUIKRETE Re-Cap lists about 65 ft² per 40 lb bag at 1/16 in and about 16 ft² at 1/4 in.
Assumptions
- Overlay and repair yields are separate.
- Patch depth is an average.
- Areas do not overlap unintentionally.
- Bonding agent is optional.
- Structural evaluation is outside scope.
Sources
Frequently asked questions
Why are overlay and repair packages separate?
Thin resurfacers and repair mortars have different yields and thickness limits.
Can I add several repairs?
Yes, up to ten patches.
How is overlay yield entered?
Enter coverage per package with its reference thickness.
Is bonding agent always required?
No, it is optional.
Does this determine if concrete is repairable?
No.
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