STOPGAP 1200 is a high performance smoothing compound, designed for fast and efficient preparation of sound internal subfloors before the installation of new floorcoverings. This low odour, two-component compound sets and dries quickly, making it ideal for time-sensitive projects. It has a rapid walk-on-hard time from just 60 minutes and allows floorcoverings to be laid from 4 hours, allowing projects to be completed with minimal downtime.