LEVEL-1™ is a cement-based, interior, self-leveling underlayment that can be used to create a smooth, flat or level surface prior to the installation of floor coverings. Its extended working time, low shrinkage, and superior leveling properties make it the ideal product for renovation and new construction projects where next-day flooring installations are not critical. LEVEL-1 produces a hard durable surface that can be left open to normal construction traffic for up to one year before the installation of finished flooring, and it can be featheredged to meet existing transitions.