Most standard self-leveling concrete products are designed to be poured anywhere from one-eighth of an inch up to one inch thick in a single application. If a floor depression requires a deeper fill exceeding one inch, standard levelers will shrink, crack, or fail to cure properly unless mixed with clean, washed aggregate or replaced with a specialized deep-pour formulation. Manufacturers provide explicit technical data sheets detailing the maximum single-lift thickness limits for their specific compounds, and exceeding these height limits without aggregate additions can compromise the overall structural integrity of the floor.
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