Project quantity summary
Results appear here after calculation, above the form.
Detailed summary
Quantity graph
Calculator inputs
Use project dimensions, spray rate, dilution, and loss assumptions.
Formula used
1) Plan area = length × width, converted to square meters when needed.
2) Net spray area = plan area × coats × (1 + texture factor).
3) Total diluted spray volume = net spray area × applied spray rate × (1 + waste).
4) Undiluted emulsion = total diluted spray volume ÷ (1 + dilution).
5) Added water = total diluted spray volume − undiluted emulsion.
6) Residual binder = undiluted emulsion × residual asphalt content.
7) Emulsion mass = undiluted emulsion × density.
8) Drums required = undiluted emulsion ÷ drum size.
How to use this calculator
- Enter paved length and width, then choose meters or feet.
- Select the number of coats planned for the work item.
- Pick a surface type and review the recommended rate range.
- Enter the field application rate in either L/m² or gal/sy.
- Add dilution, waste, residue, density, drum size, and texture assumptions.
- Press the calculate button to show results above the form.
- Review the summary table and graph before exporting CSV or PDF.
- Verify final ordering against specifications, calibration, and supplier guidance.
Example data table
| Project | Area (m²) | Rate | Coats | Total diluted volume (L) | Undiluted emulsion (L) | Drums |
|---|---|---|---|---|---|---|
| Urban lane resurfacing | 648.00 | 0.28 L/m² | 1 | 205.75 | 171.46 | 0.86 |
| Parking area overlay | 2,090.00 | 0.24 L/m² | 1 | 547.75 | 476.30 | 2.38 |
| Milled highway section | 7,800.00 | 0.38 L/m² | 1 | 3,518.86 | 2,815.09 | 14.08 |
Frequently asked questions
1) What is a tack coat quantity calculator?
It estimates emulsion, added water, residual binder, and drums from area, rate, dilution, coats, and waste assumptions for paving work.
2) Which application rate should I use?
Start with project specifications, supplier guidance, and surface condition. Smooth milled or existing asphalt often needs less than dry, open, or absorptive surfaces.
3) Does dilution change asphalt residue?
No. Dilution adds water for sprayability. Residual asphalt comes from the emulsion’s binder content, not from the added water percentage.
4) Why include waste or loss percentage?
Waste covers startup losses, overspray, hose contents, uneven texture, and field variation. It helps ordering reflect practical site conditions rather than ideal theory.
5) Can I use gallons per square yard?
Yes. The calculator accepts gallons per square yard and liters per square meter, then converts values for consistent quantity calculations.
6) How many coats should I enter?
Use the number actually planned. Most tack work uses one coat, but staged construction or special details may require more.
7) What does residual asphalt content mean?
It is the percentage of undiluted emulsion that remains as asphalt binder after water evaporates and the emulsion breaks.
8) Is this suitable for final ordering?
It is a planning tool. Confirm rate, emulsion grade, dilution practice, and coverage with specifications, supplier data, and field calibration before purchase.