Why Does My SPC Floor Separate?
SPC (Stone Plastic Composite) flooring separation — where gaps open up between planks along the seams — is one of the most common complaints we investigate. While SPC is marketed as dimensionally stable and waterproof, it is still subject to thermal expansion, subfloor influences, and locking system limitations that can cause seams to open over time.
Key Takeaways
- Thermal expansion without adequate perimeter gaps is the leading cause of SPC separation
- Subfloor irregularities (high spots, low spots) can force planks apart at seams
- Locking system damage during installation can cause seams to open progressively
- Direct sunlight through windows creates concentrated heat zones that accelerate separation
- A certified inspection measures expansion gaps, subfloor flatness, and locking system integrity
Frequently Asked Questions
SPC is waterproof at the surface, but moisture beneath the floor can still cause subfloor damage, adhesive failure, and mold. Waterproof does not mean damage-proof.
Our Standard Flooring Inspection starts at $550 and covers vinyl, LVP, SPC, laminate, and carpet. Includes visual assessment, moisture testing, and a written report.
Manufacturer warranties typically cover product defects but not installation errors. A certified inspection determines whether the failure is a product or installation issue.
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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My Floor Inspection provides independent, forensic-grade flooring evaluations throughout Southern California. NWFA, FCITS, NALFA, and IFCII certified.
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