Sikafloor®-31 NA PurCem®

Solvent-free, High Build, Cementitious Urethane Coating

Sikafloor®-31 NA PurCem® is a three-component, solvent free, high-build, pigmented, matte finish coating based on the unique Sikafloor PurCem water dispersed polyurethane/cement and aggregate technology. Typically installed as a top coat for Sikafloor PurCem systems. Can also be used as a standalone coating on concrete surfaces.  It provides an economical solution that has excellent chemical resistance properties and very good durability against abrasion and mechanical damage. Application thickness 15 - 20 mils per coat.

  • Can be applied on green concrete (typically 7 -10 days) after preparation (see surface prep section) and where substrate has tensile bond strength in excess of 218 psi (1.5 MPa).
  • Can be applied to concrete substrates where < 100% relative humidity is measured as per ASTM F2170.
  • Resists a very wide range of organic and inorganic acids, alkalis, amines, salts, and solvents. Consult Sika Technical Service for full details. Refer to the Sika PurCem Chemical Resistance Chart.
  • Non-tainting, odorless.
  • Good wear resistance from a two coat application, if used as a stand-alone coating.
  • Economical and easy to apply.
  • Can be applied over partially cured concrete substrates (> 4% mass (pbw –part by weight) as measured with Tramex® CME/CMExpert type concrete moisture meter), full 28 days cure time is not necessary.
  • Minimal maintenance costs, superior life cycle cost advantage versus tile.
  • Achieves highest performance ratings according to ASTM G21 resistance to fungi and ASTM D3273 resistance to mold growth
  • Meets the requirements of USDA for use in food plants.