Laminate floor swelling from urine contamination

Swelling from moisture intrusion

Swelling from moisture intrusion

Swelling from moisture intrusion

Swelling from moisture intrusion

Swelling from moisture intrusion

Swelling from moisture intrusion

Swelling from moisture intrusion

Pet urine viewed under UV lighting

Swelling from moisture intrusion

Pet urine viewed under UV lighting

Azostix used to detect urine

Swelling from moisture intrusion

Swelling from moisture intrusion

Swelling from pet urine

Swelling from moisture intrusion

Swelling or Bubbling (Laminate Flooring)

Floor Detective® Claims and Conditions Guide

Summary

Swelling or bubbling in laminate flooring is a moisture-related condition that develops when liquid moisture enters plank joints, bevels, edges, or other vulnerable openings and is absorbed into the fiberboard core. Laminate cores are hygroscopic by design and respond dimensionally when exposed to liquid moisture. As the core expands, pressure may develop within the floating floor system, producing visible edge lift, peaking, bubbling, crowning, joint stress, or distortion along plank edges and seams. The condition most commonly originates at joints rather than through intact wear surfaces. Early-stage exposure may remain localized, while prolonged or repeated exposure may progressively affect larger areas of the flooring system. Swelling alone does not independently establish laminate manufacturing nonconformance. Proper interpretation requires correlation of moisture pathway, exposure history, distribution pattern, support condition, environmental conditions, and overall flooring-system behavior before conclusions are reached. See also Surface Whitening from Topical Moisture Entrapment, Subfloor Flatness, and Laminate Problems for broader context.

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