Cupping

Cupping

Cupping

Cupping

Edges are higher than the center

Cupping

Dry cupping

Edges are higher than the center

Check expansion space

Floor locked in place

Check floor flatness

Flatness issues

Floor temperature

Rh and Temp

Cupping

Cupping

Device Used to measure Sample Change

Sample showing .75 inch curl

Curling

Curling / Edge Lift (Resilient Plank)

Floor Detective® Claims and Conditions Guide

Summary

Curling or edge lift in resilient plank flooring is a condition in which plank edges or ends become elevated relative to the center of the plank. The condition develops when uneven dimensional movement within the plank creates dimensional imbalance between plank layers due to environmental exposure, substrate conditions, product construction, chemical interaction, installation configuration, differential support, or service stresses. This imbalance creates internal curvature stress that causes the plank to bend or lift along its edges. Curling may appear as

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