Param 4500

self-leveling concrete underlayment

Param 4500 is Portland cement based, self-leveling concrete underlayment formulated to level and smooth interior concrete, terrazzo, ceramic and quarry tile, metal, wooden substrates and non-water soluble adhesive residue on concrete prior to the installation of finished flooring. It can be installed on, above or below grade. Param 4500 provides a durable, flat, smooth floor surface with minimum labor and installation time.

Param 4500 provides a substrate which can accept ceramic tile and natural stone within 3-4 hours after application. Finished floor coverings such as concrete micro-toppings/overlays, resinous flooring, carpet, VCT, sheet vinyl, rubber and engineered wood plank can be installed after 24 hours.

  • No trowelling required; it is self-leveling
  • Suitable for residential and commercial applications
  • Contains no protein additives; no gypsum
  • Maintains workability (healing properties) for 25 minutes (depending upon ambient conditions)
  • Does not promote the growth of mold or mildew
  • Very fluid, ideal for pouring and pumping
  • Non-shrink; does not cause dusting
  • Compatible with most flooring adhesives
  • High early strength, walkable in just 3-4 hours
  • No dangerous emissions or irritating fumes
Density 125lb/ft3 Mixing Ratio 5.5–5.75 quarts per 50lb bag
Flammability (ASTM E84) Flame Spread 0 Compressive Strength (ASTM C 109) 24hours 3000psi
Flammability (ASTM E84) Fuel Contribution 0 Compressive Strength (ASTM C 109) 7 days 4500psi
Flammability (ASTM E84) Smoke Development 0 Compressive Strength (ASTM C 109) 28 days 5000psi
Flexural Strength 1100psi Set Times (ASTM C191) Working Time 25 min (depending on temp.)
Set Times (ASTM C191) Initial Set 1.5 hours Set Times (ASTM C191) Final Set 2 hours
Shelf life 6 months

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