SikaTop 121 Plus

SikaTop® 121 PLUS is a polymer-modified, PLUS migrating corrosion inhibitor, cementitious, two-component, fast-setting, trowel or rub applied, thin-coat mortar for concrete repairs, for skin coats, filling bugholes, honeycombing and for feather edging.

Features and Benefits

  • Superior abrasion resistance over conventional cement mortar.
  • High bond strength assures superior adhesion.
  • Compatible with thermal coefficient of expansion of concrete.
  • Easily applied to clean, sound substrates. May be featheredged.
  • Good freeze/thaw resistance.
  • Increased resistance to de-icing salts.
  • Not a vapour barrier.
  • Not flammable.
  • Canadian Food Inspection Agency acceptance.
  • Ministry of Transport Québec acceptance.


  • Use on grade, above, and below grade on concrete and mortar.
  • Use on horizontal, vertical and overhead surfaces.
  • Block filler and skin coats.
  • Repair for gouges, broken edges, bugholes, pores, honeycombing.
  • Adhesive for insulation materials, lightweight concrete, foam insulation board.


  • Maximum application thickness: 4 mm (3/16 in).
  • Minimum ambient and surface temperatures 7°C (44°F) and rising at time of application.


Contains cement, silica sand and polymer that may in certain cases, cause skin irritation. Avoid breathing dust. Use only with adequate ventilation. In confined areas, use of a NIOSH/MSHA approved respirator is recommended. Consult product label for additional information.


See Technical Information for More Details

SikaTop 121 Plus is Available in

  • 25 kg Units
Focus Design Group