A 6' long metal straight-edge with a Veritas 1/64" Fractional Taper Gage was used to determine that the floor is within the manufacturer's tolerances for flatness. The measurements ranged from 0" to 1/16" in 6'. (Normal) No vertical movement of the flooring material was observed.

High edges of disengaged planks

cracked planks

Installation damage

Installation damage

Not properly engaged/locked

Wrinkled vapor barrier - Photo courtesy of Brad Welsh

Deflection under load

Subfloor flatness measurement

High and low areas

Noise – Snap, Crackle, Pop, and Squeaks (Resilient Plank)

Floor Detective® Claims and Conditions Guide

Summary

Noise in resilient plank flooring refers to audible snapping, popping, crackling, clicking, squeaking, or hollow sounds during foot traffic or load application. Floating and semi-floating systems are designed to allow movement, and sound is generated when components shift relative to one another and frictional or compressive energy is released. Minor acoustic variation may occur within normal system behavior. Persistent, repeatable, or location-specific noise typically reflects increased movement interaction within the plank, locking system, underlayment, adhesive layer, or substrate assembly. Audible response alone does not independently establish

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