SikaLatex R

Acrylic latex bonding agent and admixture for portland-cement mortar and concrete

SikaLatex® R is an acrylic-polymer latex. It is a non-reemulsifiable, general-purpose admixture to produce polymer-modified concrete and mortar.

Where to use

  • An admixture in mortar and concrete to improve adhesion, and achieve a denser surface.
  • Use in patching and flash coats. Use with stucco and terrazzo.
  • As a bonding grout when mixed with sand and portland cement.
  • For use with SikaRepair® to improve the mortar and increase the adhesion and performance.


  • Mortar and concrete containing SikaLatex® R exhibit improved adhesion to prepared substrates.
  • Increased adhesive strength of mortar/concrete when used as a bonding agent or as a bonding grout.
  • Increased resistance to freeze/thaw durability.
  • Does not produce a vapor barrier.



As admixture/mixing solution: With mixer running, add materials in the following order: SikaLatex® R solution, aggregate, cement, or SikaRepair® . Add more SikaLatex® R solution if required.

As a bonding agent: Add 1 part cement, 2 parts sand, and a sufficient amount of undiluted SikaLatex® R to produce a creamy paint consistency. Maximum 4 gals./sack of cement.

As a primer for acrylic coatings: No dilution is required. Use as is.


Bonding Agent: Brush grout into area to be resurfaced with stiff-bristled broom or scrub brush. Be sure entire surface and all edges are coated. Apply topping immediately over scrub coat before the bonding slurry dries.

Admixture: Immediately trowel SikaLatex® R mortar or concrete mixes into areas to be patched. Do not over-finish. As soon as finish will resist damage, cure with damp burlap and/or white pigmented polyethylene film. Curing should continue for 24 hours. Pre-testing is recommended when adding SikaLatex® R to a specific mix design to assure the results required.

Primer (for acrylic coatings only): Apply undiluted SikaLatex® R to prepared concrete substrate using brushes, rollers, soft brooms, or spray. SikaLatex® R must be tack-free (film formation) prior to coating. Estimated coverage on a CSP-3 prepared surface is 300 sq. ft./gal. SikaLatex® R primer may be applied up to 24 hours ahead providing the area is kept dry and clean. Very porous concrete may require a second coat of SikaLatex® R to seal the surface.


As an admixture: 4 gals./sack of cement.
As mixing solution for SikaRepair® Mortar or Concrete, use neat.
As a primer: estimated coverage on a CSP-3 prepared surface is 300 sq. ft./gal.