Custom Building Products LevelQuik RS 50 lb Review (2026)
By Nate Sawyer, Editor · Updated July 2026
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- Subfloor leveling
- Large format tile
A rapid-set Portland-cement self-leveler that pours and self-seeks flat with no troweling, walkable in 4 hours and tile-ready in 12-16, its 4,300 psi base steadying tile that would rock on a wavy subfloor. The speed is also the trap: a ~20 minute working time forces small batches, and unprimed concrete or wood makes it blister and delaminate.
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 |
Frequently Asked Questions
- How long do you have to work with LevelQuik RS after mixing?
- About 20 minutes, and that is unforgiving. Mix and pour in small batches or it will set in the bucket. This is the defining difference between LevelQuik RS and a regular-set leveler - speed on the floor, no slack in the schedule.
- Can LevelQuik RS be poured over plywood?
- Yes, over primed plywood as well as primed concrete. The primer is not optional on either substrate - skip it and the pour flash-dries, blisters and delaminates.
- How soon can you tile over it?
- Walkable in 4 hours and tile-ready in 12-16 hours, which is what makes a same-day tile job possible. Its 4,300 psi compressive strength gives a solid base under large-format porcelain that would rock on a wavy subfloor.
- What preparation does it need besides priming?
- Perimeter dams and every crack and expansion joint sealed. A self-leveler seeks the lowest point, and any unsealed gap means it drains through and out of the room. Coverage is about 40 sq ft per 50 lb bag at 1/8 in, and it pours from 1/8 in up to 1 in per lift.