TRU® Self-Leveling is a polishable topping with a long flow life, a lengthy working duration, and a smooth, robust surface with high bond strength. Add ornamental aggregate or integral colours to TRU Self-Leveling to make it your own. If you only need to smooth out minor irregularities, self-leveling concrete may be laid as thin as a quarter of an inch. However, if the concrete floor has low parts and has to be leveled even further, it can be poured as thick as an inch and a half without aggregate and 5 inches with aggregate.