The Bostik Screedmaster SL C910 Speed 30 Rapid Set Self Levelling Compound is the perfect choice. With a walk-on time of just 30 minutes, minimize the potential downtime and get back up and running straight the way. Created using the latest technologies and advancements in concrete technology, the SL C910 Rapid Set Self Levelling Compound will smooth uneven surfaces before the installation of decorative floor coverings and can be laid over most common substrates including cementitious screeds, concrete floors, calcium sulphate screeds and other strong, rigid subfloors. It's rapid set nature means that the SL C910 is perfect for quick turnaround projects where long downtimes are not an option.