VELOSIT SL 502 is a cementitious self leveling underlayment for concrete substrates. It creates a very smooth surface for coatings and floor coverings.
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 16 MPa (2340 psi) compressive strength after 4 hours
Final strength of more than 50 MPa (7250 psi) after 28 days
Meets the requirements of EN 13813 class CT-C50-F7
Open to foot traffic after 3 hours
Excellent adhesion to properly prepared concrete
Good resistance against CO2 and Chloride penetration duets a very tight pore structure
Excellent water resistance, no strength loss under water
Good weathering resistance
Good sulfate resistance
Colors: Light gray, gray, anthracite
Typical Application Areas
Interior and exterior use
Suitable for permanently water immersed applications
Leveling of concrete slabs and floors
Cosmetic repair of surface defects on concrete floors
Structural repair of concrete
Application thickness from 3 mm (1/8”) to 38 mm (1 ½“)
Self leveling screed
Floor heating systems
As a binder for terrazzo floors
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