Linoleum is a natural material that can be affected by high humidity or standing water. If the adhesive underneath becomes saturated, it loses its grip, causing the material to lift and form pockets of air or moisture. This is a serious issue as it can lead to mold and structural degradation of the subfloor. If bubbles or color changes appear, investigate the source—such as a plumbing leak or poor site ventilation—and address the moisture issue immediately to prevent further damage to the flooring.
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What indicates moisture trapped beneath linoleum?
Moisture trapped beneath linoleum often manifests as bubbling, blistering, or localized discoloration. In some cases, you may notice a musty odor or the edges of the sheet beginning to curl, both of which indicate that the subfloor is damp and the adhesive bond is failing.