A dual-purpose pumpable/pourable, cement based product that can be used as an interior wear surface or a high-performing self-leveling underlayment. CHAPCO ULTIMATE WL is designed for use over a variety of substrates with thickness ranges from 1/16" up to 1½" in a single application and can be used directly over green concrete (<95% RH). Install sealers or flooring as soon as soon as 6 hours.