INTRODUCING TEC® Level Set® 500 HF Self-Leveling Underlayment. No other product flows faster or provides a smoother surface. The resulting surface is so smooth, you can get up to 20% more coverage from your adhesives*. In addition, no sanding or skim coating needed - cutting labor costs by up to 66%. The product is very easy to mix and can be poured or pumped. It is easily featheredged to adjoining elevations.