Custom Building Products LevelQuik RS 50 lb Review (2026)
By The DIYPicks Team · Updated July 2026
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- Subfloor leveling
- Large format tile
The go-to rapid self-leveler for getting a subfloor flat before tile. Its speed is the whole point and also the main trap, prime everything and mix small batches or the short pot life will bite you.
Pros
- Rapid-set formula lets you tile the same day, walkable in 4 hours and tile-ready in 12-16 hours
- Pourable and self-seeking, no troweling, so a first-timer can flatten a floor faster than patching by hand
- 4,300 psi compressive strength gives a solid base under large-format porcelain that would rock on a wavy subfloor
Cons
- Fast working time (about 20 minutes) is unforgiving, you must mix and pour in small batches or it sets in the bucket
- Requires a primer coat on both concrete and wood or it flash-dries, blisters and delaminates
- Needs perimeter dams and crack/expansion sealing first, or it self-levels itself right down through gaps
Specifications
| Type | Portland cement self-leveler |
|---|---|
| Base | Concrete / plywood (primed) |
| Coverage | ~40 sq ft at 1/8 in |
| Thickness | 1/8 in to 1 in per pour |
| Cure | Walk in 4 hr, tile in 12-16 hr |