Valspar® Masonry Waterproofer

Fortified with new, heavy-duty resin technology to provide maximum adhesion while protecting your concrete and masonry surfaces with a watertight barrier guaranteed to stop water. This advanced, low-odor formula is ideal for basements. Use on properly prepared interior and exterior masonry walls and foundations, basements, cinder block, brick and poured concrete. Do not use on floors. If used outdoors, this product must be top coated with a high-quality exterior latex house paint.

  • Basement walls, foundations and more
  • Powerful, water and moisture blocker
  • Gives a mold- and mildew-resistant finish
  • Available in 30+ tintable colors



Options may vary by retailer. Contact your preferred retailer for availability.


  • Usage
    For use on interior and exterior masonry walls and foundation, basement walls, cinder block, brick, stucco and poured concrete walls. Do not use on floors.
  • Prep
    General: All surfaces must be clean, dry and free of all loose, peeling paint or contaminants. Use a hydraulic-cement patching compound on all cracks, holes and separations at joints and other areas where seepage occurs. Bare surfaces: If present, remove any white powdery residue with water and a scrub brush. Previously painted surfaces: Use a tape test to ensure adequate adhesion. Press heavy-duty tape (i.e. duct tape) at various places on the painted surface. Pull the tape quickly from the surface. If the previous paint is removed by the tape, the paint must be fully removed before using this product. Reduce seepage: Repair roof and gutter leaks, install downspout extensions and build up ground level next to the house. This will divert water away from the house, reduce hydrostatic water pressure on the walls and foundation, and lower the potential for seepage.
  • Application
    Mix well before and during use. Apply 2 coats with a premium-quality, long-nap roller or very stiffbrush. For first coat application only, moisten bare surfaces lightly with water. For the first coat, work the product into thesurface using a brush or roller. Spread product evenly and finish with long, even strokes in one direction. Let dry 12 hoursbefore applying the second coat. Do not apply to walls that have active water seepage at the time of application.
  • Dry Time
    Dry Time @ 77 °F and 50 % Relative Humidity
    To The Touch: 30 minute - 60 minute
    Recoat: 12 hour
  • Clean-up & Disposal
    Clean up with warm soapy water.
Recommended Coats
2 coats
Dry To the Touch*
30 minute - 60 minute
12 hour
*Dry Time @ 77 °F and 50 % Relative Humidity

Data Sheets

Download the product data sheet (PDS) and safety data sheet (SDS) for your Valspar masonry waterproofer.

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