Buckling

Cupping

Dry cupping

Heat vent

Strand bamboo cells

Cupping

Cross stacked

Cupping

Relative humidity and temperature measurement

Cupping

Cupping

Cupping

Moisture imbalance

Edges of planks are higher than the centers

Cupping measurement

Bamboo Cupping (Strand Bamboo)

Floor Detective® Claims and Conditions Guide

Summary

Bamboo cupping is a dimensional distortion condition in which the edges of strand bamboo planks rise higher than the center, creating a concave surface profile across the board width. The condition develops when a moisture imbalance exists through the thickness of the plank, causing one side to expand or contract differently than the other. Although strand bamboo is dense and resin-bound, it remains responsive to environmental moisture conditions. Cupping may appear shortly after installation or

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