SikaCeram-621 FlowFix Jointing Compound, suitable for use on joints between 3-10mm wide and 20mm in depth. This highly workable jointing compound is a controlled, cementitious flowable jointing grout. Easy to use, SikaCeram-621 FlowFixJointing Compound is applied by mixing with water on site. Simply pour over joints and work into other exposed joints with a squeegee. The surplus jointing compound can then be washed off after 30 minutes and will cure in 60 minutes to anon-permeable finish.