Why Are My Hardwood Floors Separating?
Gaps between hardwood floor boards are one of the most common concerns homeowners raise. Some gapping is normal — wood is a natural material that expands and contracts with seasonal humidity changes. However, excessive or persistent gaps may indicate moisture problems, improper acclimation before installation, or installation errors.
Key Takeaways
- Normal seasonal gapping occurs in dry winter months and closes in humid summer months
- Excessive gaps that persist year-round may indicate improper acclimation before installation
- Gaps caused by subfloor moisture loss can indicate a chronic moisture problem beneath the floor
- Wide, irregular gaps may signal installation errors such as insufficient fasteners or improper board spacing
- A certified inspector measures gap widths, moisture levels, and installation compliance to determine the cause
Frequently Asked Questions
Our NWFA Forensic Hardwood Inspection starts at $750 and includes moisture analysis, NWFA-standards evaluation, and a forensic report suitable for warranty, insurance, and legal matters.
No. Document the condition with photographs and schedule an inspection before any repairs. Once evidence is altered or destroyed, it cannot be recovered.
We provide on-site inspections throughout Southern California (Los Angeles, Orange County, San Diego, Inland Empire) and nationwide consulting for legal and expert witness matters.
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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