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 1/8” (3 mm) to 1 ½“ (38 mm). 5″ (13 cm) when extended with aggregate.
Properties:
- Minimal shrinkage/expansion under dry resp. wet curing conditions minimizing the risk of micro-cracking
- Excellent flow with long pot 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 12 hours.
- 30 – 40 min. working time and 1740 psi (12 MPa) compressive strength after 4 hours
- Final strength of more than 4350 psi (30 MPa) after 28 days
- Open to foot traffic after 3 hours
- Very good adhesion to properly prepared concrete
