What is the difference between pouring self-leveling underlayment and doing a mechanical grind-and-fill floor flattening?
While both methods aim to eliminate subfloor imperfections, pouring self-leveling underlayment (SLU) is a fluid-addition process that aligns a floor to a true horizontal plane, whereas mechanical grind-and-fill is a subtraction-and-targeted-patch process designed to flatten local contours without altering the overall elevation. Core Comparison Feature Self-Leveling Underlayment (SLU) Mechanical Grind-and-Fill…