Valspar® Professional Block Filler

Fast-drying Interior/Exterior Latex Block Filler seals porous masonry surfaces. Fills the voids in cement and cinder blocks, reducing the amount of finish coat needed to coat such surfaces. Provides an ideal primer surface for latex and oil-base topcoats. Formulated for professional painter use in residential, commercial, institutional and industrial applications. NOTE: Exterior use requires topcoating with exterior paints for maximum performance.

  • Use on cement or cinder blocks
  • Seals porous masonry surfaces
  • Reduces the amount of finish coat required
Sizes 5 Gallon
Coverage 75 ft²/gal - 100 ft²/gal
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Available at Independent Retailers

How to use

Usage Properly prepared interior and exterior surfaces including bare cinder block, cement, and masonry. Do not apply latex Block Filler to previously painted surfaces.
Application Stir thoroughly with a paddle or Jiffy Mixer before using. Apply at temperatures above 50°F. Reduction is not recommended.
Dry Time Dry Time @ 77 °F and 50 % Relative Humidity To The Touch: 2 hour – 8 hour Recoat: 1 hour - 72 hour
Clean-up & Disposal Cleanup, storage and disposal: Clean spills, spatters, hands and tools immediately after use with soap and warm water. After cleaning, flush spray equipment with compliant cleanup solvent to prevent rusting of the equipment.
Dry to the Touch* 2 hour – 8 hour
*Dry Time @ 77 °F and 50 % Relative Humidity


Download the product data sheet (PDS) and safety data sheet (SDS) for your product Valspar® Professional Block Filler.
Product Number Base Container Size SDS PDS
080047444388 5 Gallon