Ardex Feather Finish mixes to a creamy, smooth finish underlayment that eliminates flooring installation problems associated with disbonding, crumbling, and staining. It is formulated from a blend of Portland cement and other hydraulic cements that provides a smooth, permanent finish for a variety of substrates including sheet vinyl and VCT. Install over concrete, masonry, wood, terrazzo, and ceramic and quarry tile - as well as properly prepared residues of cutback and other non-water-soluble adhesives on concrete all without the need for priming or the use of a latex additive. Covers up to 300 sq ft per bag Install floor coverings in as little as 15 minutes. Mixes with water only. Exceptional bond strength. Easy to mix and apply. True featheredge.