Cracked tile is a common complaint that can stem from several causes: subfloor movement, insufficient thinset coverage, structural deflection, thermal stress, or impact. The pattern, location, and characteristics of the crack provide important clues about the underlying cause.
Key Takeaways
- Cracks following grout lines in a straight path often indicate subfloor movement or structural deflection
- Cracks through the body of individual tiles may indicate point loads, impact, or insufficient support beneath
- Spider-web or radiating cracks suggest impact damage
- Cracks that mirror subfloor joints indicate movement at the substrate level
- A certified inspection evaluates crack patterns, thinset coverage, subfloor conditions, and structural factors
Frequently Asked Questions
Not always — some hollow sound at tile edges is acceptable. But widespread hollow tile or hollow sounds at tile centers indicate a significant installation defect under ANSI standards.
Our Advanced Flooring & Tile Inspection starts at $650 and includes substrate evaluation, thinset coverage assessment, and a detailed written report.
About the Author
Independent flooring inspector serving Southern California. Certified as NWFA Certified Inspector (#CP2416122), FCITS Master Inspector (#2031), NALFA Inspector, IFCII Inspector, and CFI University graduate. Specializes in forensic flooring investigations, moisture diagnostics, insurance claims, and expert witness services.
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