Calculator Inputs
Example Data Table
Use this sample to understand typical inputs and outputs.
| Scenario | Area (m²) | Thickness (mm) | Density (kg/L) | Wastage (%) | Resin (kg) (with wastage) | Kits (25 kg) |
|---|---|---|---|---|---|---|
| Light duty room | 120 | 2 | 1.40 | 5 | 352.80 | 15 |
| Industrial bay | 500 | 3 | 1.45 | 7 | 2,329.50 | 94 |
| Ramp section | 65 | 4 | 1.50 | 8 | 421.20 | 17 |
Formula Used
This calculator uses the volume-to-liter relationship for thin layers:
- 1 m² × 1 mm = 1 liter of material volume.
Resin (kg) = Area (m²) × Consumption (kg/m²)
Resin with wastage (kg) = Resin (kg) × (1 + Wastage% / 100)
Kits = ceil( Resin with wastage / Kit size )
Primer (L) = (Area / Primer coverage) × Primer coats
Topcoat (L) = (Area / Topcoat coverage) × Topcoat coats
For best accuracy, use manufacturer coverage and density values.
How to Use This Calculator
- Enter length and width, or type the area directly.
- Set the thickness and density from your PU system data.
- Add a realistic wastage percentage for mixing and surface variation.
- Provide kit size to estimate how many sets to order.
- Enable primer and topcoat if included in your specification.
- Enter rates for resin, primer, topcoat, and labor to get a project total.
- Click Calculate, then download CSV or PDF for documentation.
Always confirm substrate condition, profile, and product constraints before procurement.
PU Flooring Estimation Guide
Polyurethane (PU) floor systems are widely used in industrial, commercial, and food-processing areas because they can provide flexibility, chemical resistance, and comfortable underfoot performance. Accurate quantity planning reduces shortages, prevents over-ordering, and helps you schedule installation without delay. This calculator estimates core PU resin consumption using thickness and density, then adds optional primer and topcoat requirements based on coverage rates and coats.
The material logic starts with a simple relationship: a 1 mm layer applied over 1 m² equals 1 liter of wet volume. When you multiply thickness (mm) by density (kg/L), you obtain consumption in kg/m². Multiply that by floor area to get the net resin mass. Finally, the calculator applies a wastage factor to account for mixing losses, roller/gee wear, surface profile, and unavoidable site handling. Use the kit size to convert total mass into practical ordering quantities.
Primer and topcoat values vary by substrate porosity, surface preparation, and product selection. As a professional practice, confirm coverage values from the product datasheet, then add coats exactly as specified. If your job includes labor pricing, enter a rate per square meter to generate a single consolidated project total suitable for budgeting and tender comparisons.
Example: For a 120 m² room at 2 mm thickness with density 1.40 kg/L and 5% wastage, resin with wastage is 352.8 kg, which equals 15 kits when using 25 kg sets. If you enable primer at 8 m²/L for one coat, you will need 15.0 L of primer. For a topcoat at 10 m²/L for one coat, you will need 12.0 L. These sample values match the example data table and demonstrate how thickness and coverage drive procurement.
Final quantities should be verified against site conditions, substrate moisture, and manufacturer guidance before purchasing. Always allow for batch consistency and site touch-up requirements.
FAQs
1) Should I enter area or length and width?
Enter either. If Area is provided, it overrides length × width. Use manual area for irregular rooms or multi-zone takeoffs combined into one total.
2) What density value should I use?
Use the manufacturer’s stated mixed density for the PU layer you are applying. If unavailable, a typical planning range is about 1.35–1.50 kg/L.
3) Why is wastage necessary?
Wastage covers mixing residue, application losses, surface texture, and site handling. On well-prepared slabs, 3–7% is common, while rough substrates may require more.
4) How are kits calculated?
Kits equal the ceiling of (resin with wastage ÷ kit size). Rounding up prevents shortages because partial kits typically cannot be purchased.
5) Are primer and topcoat always required?
Not always. Many specifications include primer for adhesion and porosity control, and a topcoat for sealing and cleaning. Follow the system specification and datasheet guidance.
6) Can I use this for ramps and coves?
Yes, if you calculate the true surface area. For ramps, use sloped area. For coves and upstands, add their area to the floor area before calculating.
7) What does the PDF/CSV export include?
Exports include your inputs and calculated results, making it easy to share with procurement and site teams or attach to method statements and material submittals.