UltraTile ProLevel Two is a two-component, mid-strength smoothing underlayment consisting of a powdered cement blend and a liquid polymer. Designed for interior use, it offers a rapid drying time, allowing for light foot traffic within 2.5 hours and subsequent tile installation after 24 hours. To ensure optimal performance, the subfloor must be clean, dry, and free from contaminants such as laitance, adhesive residue, or paints. For damp subfloors, a damp-proof membrane is required. Adhere to BS 8203 moisture testing standards, aiming for a hygrometer reading below 75% RH. If necessary, apply a surface damp-proof membrane.