VELOSIT® SL 501
ECONOMIC SELF LEVELING UNDERLAYMENT
VELOSIT SL 501 is a cementitious self leveling underlayment for concrete substrates. It creates a smooth surface for coatings and floor coverings.
Typical applications:
- Interior and exterior use
- Leveling of concrete slabs and floors
- Repair of surface defects on concrete floors
- Application thickness from 3 mm (1/8”) to 38 mm (1 ½“)
Properties:
- Minimal shrinkage/expansion under dry resp. wet curing conditions minimizing the risk of micro-cracking
- Excellent flow with long slump life
- Smooth surface profile
- Fast air release with minimal requirement for agitation
- Ready for covering with ceramic tiles after 4 hours, for moisture sensitive floor coverings after 16 hours
- 30 – 40 min. working time and 12 MPa (1740 psi) compressive strength after 4 hours
- Final strength of more than 30 MPa (4350 psi) after 28 days
- Open to foot traffic after 3 hours
- Very good adhesion to properly prepared concrete
- Good resistance against CO2 and Chloride penetration due to a very tight pore structure
- Excellent water resistance, no strength loss under water
- Good weathering resistance
- Good sulfate resis
- Light gray color close to concrete color
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