Project notes
Understand this estimate
A multi-layer floor estimate treats base and clear products separately. Coverage ranges produce quantity ranges in reverse order: lower coverage means more gallons.
How to use the calculator
Measure the floor and base product range
Enter the base product’s documented coverage range, coat count and optional package size.
Inputs Floor area · Base coat low coverage · Base coat high coverage · Base coats · Base product package size
Enter the clear product range
Use the clear product’s own technical data and package size.
Inputs Clear coat low coverage · Clear coat high coverage · Clear coats · Clear product package size
Set an explicit allowance
The same entered allowance is applied to each layer. It does not establish product compatibility.
Inputs Extra allowance
Formula and variables
For each product, low quantity = area × coats ÷ high coverage; high quantity = area × coats ÷ low coverage. Apply the entered allowance and round each product’s package counts upward independently.
- A × N ÷ CLayer quantity
- Area times coats divided by coverage.US gal
- Cmin, CmaxCoverage range
- The high coverage gives the low quantity and vice versa.ft²/US gal
- Q ÷ PPackage count
- Rounded up separately for each layer and range end.packages
What the result means
Result interpretation
Low and high quantities are calculated independently for base and clear products. Whole package counts are also separate. Use only products documented as a compatible system.
Limits and assumptions
This page is a quantity planner, not a floor-system selector. Use products that the manufacturer specifies as a compatible system and follow its substrate, thickness, temperature and recoat instructions. The Sika example is a professional system, not a DIY recommendation.
Worked example
One base and one clear coat over 500 ft²
Assumptions
- Base coverage is 55–60 ft²/gal; clear coverage is 100–110 ft²/gal.
- Package sizes are 5 gal for base and 2 gal for clear.
Calculation
- Base: 500 ÷ 60 = 8.333 gal low; 500 ÷ 55 = 9.091 gal high.
- Clear: 500 ÷ 110 = 4.545 gal low; 500 ÷ 100 = 5 gal high.
- Package ceilings are 2 and 2 for base, and 3 and 3 for clear.
| Base coat quantity (low) | 8.333 US gal |
|---|---|
| Base coat quantity (high) | 9.091 US gal |
| Clear coat quantity (low) | 4.545 US gal |
| Clear coat quantity (high) | 5 US gal |
| Base packages (low) | 2 packages |
| Base packages (high) | 2 packages |
| Clear packages (low) | 3 packages |
| Clear packages (high) | 3 packages |
Common questions
- Can the two product quantities be combined?
- No. The base and clear layers are distinct materials and package counts are rounded separately.
- Does this choose compatible products?
- No. Verify compatibility and installation instructions in the manufacturers’ current system documentation.