Valspar® Alkalai-Resistant Masonry Primer

Valspar® Acrylic Alkali-Resistant Primer is a 100% acrylic primer/sealer, specially formulated to resist “alkali burn” commonly associated with newcementitious substrates. Its special formulation provides excellent coverage, adhesion and ease of application. It dries fast, is nonyellowing and has excellent priming and sealing properties. Can be applied to all new cementitious substrates, such as masonry, stucco and cinder block with a pH of 6 to 13. Gives a mildew-resistant coating. For interior and exterior uses.

  • 100% acrylic formula
  • Easy to apply
  • Prevents alkali burn
  • Fast drying
  • Product versatility
  • Easy clean up
Sizes 5 Gallon
Coverage 200 ft²/gal - 400 ft²/gal
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Available at Independent Retailers

How to use

Usage Drywall, Plaster, Wood, Cement composition board, Masonry, Cement, Brick, Block, Stucco
Application Stir thoroughly and intermix multiple containers. Apply only when paint, surface and air temperatures are 50–90 °F (10–32 °C) during application and drying time. Do not paint if temperatures are expected to be below 50 °F (10 °C) within 48 hours of application or when heavy dew or precipitation is expected in the next 12 hours. These recommendations are a starting point only. Due to variability in sprayers, we recommend testing your spray pattern and flow before proceeding.
Dry Time Dry Time @ 77 °F and 50 % Relative Humidity To The Touch: 2 hour – 4 hour Recoat: 12 hour - 12 hour
Clean-up & Disposal Clean up with warm, soapy water.
Dry to the Touch* 2 hour – 4 hour
*Dry Time @ 77 °F and 50 % Relative Humidity


Download the product data sheet (PDS) and safety data sheet (SDS) for your product Valspar® Alkalai-Resistant Masonry Primer.
Product Number Base Container Size SDS PDS
080047452338 White 5 Gallon