Get a working tile count before you call the supplier. Clay tiles typically run 90–100 pieces per square; concrete profiles range from 80–100 per square depending on headlap and profile. Using the wrong benchmark on a 20-square roof means your order can be 200–400 tiles off before waste is even added.
Concrete jobs often pivot on loading and handling. This tool emphasizes piece weight and boosted hips, not just module count.
Enter values and click Calculate to see quantities and weight.
Use measured or validated sloped roof area as your baseline.
Input tiles-per-square and profile assumptions that match your selected product.
Add practical allowances for cuts, ridge/hip details, and layout losses.
Convert adjusted quantity into total tile count and estimated weight.
Verify gauge, headlap, and coverage values against the exact datasheet.
Coverage and laid weight depend on exact profile, gauge, and headlap. Always align to the selected manufacturer datasheet.
Most ordering mistakes happen when assumptions are mixed across units, pitch, and coverage rules. Using Roof Tile Estimator Calculator early helps align scope, quantity, and labor planning before supplier pricing or installer scheduling. This reduces reorders, avoids under-counting, and improves quote consistency.
Start with verified dimensions, run conservative waste assumptions, then compare output against product data sheets and field conditions. For cross-checks, pair this page with Clay tile roof estimator and Concrete tile pricing calculator.
Treat calculator output as a controlled estimate, then validate accessories, overlaps, and edge details separately. Final checks are stronger when you review assumptions with Spanish tile roof cost calculator before submitting purchase orders.
Yes, but switch the tiles-per-square assumption when you change material type. Clay profiles average 90–100 per square; concrete profiles run 80–100 per square. Mixing those numbers on the same estimate creates a significant error. For better estimating accuracy, cross-check headlap, coverage per tile, and waste allowance with your project notes, then confirm roof loading before final ordering. This keeps your.
Tile cuts at hips, valleys, and rakes don’t cover the same area as a full tile, so you need extra pieces to make up the difference. On a complex Mediterranean-style roof, waste can reach 12–18% — underestimating it is one of the most common causes of material shortfalls. For better estimating accuracy, cross-check headlap, coverage per tile, and waste allowance.
Use it as the planning baseline, then validate with the supplier’s profile-specific coverage sheet and add ridge, hip, and closure accessories as separate line items before submitting the PO. For better estimating accuracy, cross-check headlap, coverage per tile, and waste allowance with your project notes, then confirm roof loading before final ordering. This keeps your manufacturer specs aligned with real.
Tile profile, headlap, batten gauge, and regional install rules change effective coverage per tile, so two products can require very different counts. For better estimating accuracy, cross-check headlap, coverage per tile, and waste allowance with your project notes, then confirm roof loading before final ordering. This keeps your manufacturer specs aligned with real site conditions and reduces costly quantity revisions.
No. Use manufacturer effective coverage data. Nominal dimensions ignore overlap and often cause major ordering errors. For better estimating accuracy, cross-check headlap, coverage per tile, and waste allowance with your project notes, then confirm roof loading before final ordering. This keeps your manufacturer specs aligned with real site conditions and reduces costly quantity revisions.
Waste rises with hips, valleys, penetrations, and breakage risk. Complex tile layouts generally need more allowance than simple gable runs. For better estimating accuracy, cross-check headlap, coverage per tile, and waste allowance with your project notes, then confirm roof loading before final ordering. This keeps your manufacturer specs aligned with real site conditions and reduces costly quantity revisions.
Yes. Tile systems are heavier than many alternatives. Verify framing capacity and local code requirements before final material decisions. For better estimating accuracy, cross-check headlap, coverage per tile, and waste allowance with your project notes, then confirm roof loading before final ordering. This keeps your manufacturer specs aligned with real site conditions and reduces costly quantity revisions.
Yes. Field tile counts do not include all ridge, hip, verge, and ventilation accessories; those should be measured separately. For better estimating accuracy, cross-check headlap, coverage per tile, and waste allowance with your project notes, then confirm roof loading before final ordering. This keeps your manufacturer specs aligned with real site conditions and reduces costly quantity revisions.
Reviewed by the Roofing Materials Calculator Team
Every calculator on this site is built using manufacturer specifications, industry-standard waste factors, and real-world estimating practices. Our formulas are cross-referenced against supplier data sheets and professional roofing takeoff methods. Calculations are for planning purposes — always verify final quantities with your supplier before ordering.
Use these together for a complete roofing material takeoff.