Broken Joints

Buckling

Broken tongue-groove

Side gaps disengagement

Fastener in laminate plank

Fastener locking floor in place

Damage

Gap

Fastener locking floor in place

Broken Tongue-Groove

Gaps

Underlayment Cushion

Deflection - Low spot

Broken locking profile

Buckling

Fastener through molding

Gaps

Tapping Damage

Broken Joints (Laminate Flooring)

Floor Detective® Claims and Conditions Guide

Summary

Broken joints in laminate flooring occur when locking edges crack, crush, bend, disengage, or lose structural integrity within the floating-floor system. Once the lock is damaged, adjoining planks no longer distribute weight evenly, which may result in gaps, lifted edges, vertical movement, clicking sounds, or progressive joint separation. Joint failure commonly develops from movement restriction, excessive flexing, moisture-related expansion, improper assembly, or concentrated loading acting on weakened locking edges. The location and distribution pattern of the damage often provide important clues regarding the underlying stress mechanism. See also Locking Systems, Vertical Movement / Deflection, and Laminate Floor Problems for broader context.

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