Commercial subfloor prep is significantly more rigorous than residential. It starts with moisture testing to prevent vapor-related failures, followed by mechanical grinding or shot-blasting to remove contaminants and create a profile for adhesives. Self-leveling underlayments are frequently used to address elevation deviations that would otherwise damage thin commercial planks or tile. Adherence to manufacturer specifications for subfloor tolerances is vital for the long-term success of the installation.

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