Plan Redland-profile concrete tile orders with realistic piece counts, waste, and total load weight. Most Redland concrete profiles run 80–100 tiles per square depending on headlap and gauge — using the wrong number on a 25-square roof means ordering 250–500 tiles off target.
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 Redland Roof Tile 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 Concrete tile pricing calculator and Roof tile estimator 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 Clay tile roof estimator before submitting purchase orders.
No — it uses profile-family assumptions. For the exact count, match the tiles-per-square figure from the Redland datasheet for your specific product (Stonewold, Cambrian, Mini Stonewold, etc.) and headlap setting. 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.
Concrete tiles run 9–12 lbs each. On a 30-square job that’s 27,000–44,000 lbs of tile — enough to warrant a structural check on older homes or large additions before the delivery truck shows up. 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.
Use it as the starting bracket, then reconcile against the Redland coverage table for your specific profile and actual measured roof area. Final PO quantities should also add accessory pieces (ridge, verge, hip) as separate line items. For better estimating accuracy, cross-check headlap, coverage per tile, and waste allowance with your project notes, then confirm roof loading before final ordering.
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.