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Common Quick Answers
Manufacturer coverage charts assume a laser-flat substrate with zero waste. In real residential work, uneven subfloors, back-buttering 12"×24" tiles (required by TCNA for 95% wet-area coverage), and mortar left in mixing buckets consume 15%–25% more mortar.
Yes. National shipping averages show 2% to 4% of ceramic or porcelain tiles suffer chipped corners or transit cracks. Our recommended buffers—10% (straight), 12%–15% (offset), 15%–18% (diagonal), and 18%–22% (herringbone)—absorb this transit fallout.
Yes! FreeTileCalculator.com is an open educational resource. Trade schools, home renovator blogs, and contractor websites are welcome to link directly to any calculator or pattern guide.