How Flat Does a Floor Need to Be Before Installing LVP, Laminate, or Tile?
Before installing LVP, laminate, or tile, the floor underneath must be flat, stable, clean, and properly prepared. “Flat” does not always mean perfectly level, but dips, humps, ridges, low spots, soft areas, and uneven transitions can cause serious flooring problems. LVP and laminate can flex, click, gap, or separate over uneven areas, while tile can crack, loosen, or show lippage. This guide explains how flat a floor needs to be, why different materials have different tolerances, and when floor leveling or subfloor repair is needed before installation.
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