Mapei has introduces ECO 160, a solvent-free, ecologically sound, non-staining sheet vinyl adhesive. ECO 160 is designed to resist any adhesive bleed through when used in the installation of mineral fiber felt-backed sheet vinyl, therefore avoiding ugly staining. In addition to being stain resistant, ECO 160 is freeze thaw stable. It is available in quarts, 2.5 and 4-gallon containers and is backed by a five-year warranty.