BEHR PRO® Block Filler Primer No. PR50

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BEHR PRO Block Filler Primer is a dependable solution for above-grade concrete surfaces, such as concrete block, cinder block, and poured or pre-cast concrete. It is an interior/exterior primer formulated to fill and seal porous masonry surfaces, reduce pin holing and provide a smooth surface prior to finish coat application.

Finish
N/A
Best for use in
Interior and Exterior
Coverage
75 - 150 Sq. Ft. per Gallon

Read important application instructions to ensure optimum paint performance.

Technical Data Sheets

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Safety Data Sheets

Product Certifications & Declarations

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Product Usage

Where to Use

Use on properly prepared, above-grade interior or exterior surfaces, such as concrete, concrete block/CMU, brick, cement board siding, stucco, and plaster.

Surface Preparation

The following steps are recommended for best results.

  • The surface must be clean, free of dust, grease, wax, peeling paint, mold, mildew and release agents. If washing is necessary, use a non-soapy detergent or a TSP substitute. Rinse well and allow to dry.
  • Fill all gaps with paintable sealant and allow to completely dry prior to coating.
  • For maximum adhesion, glossy and slick surfaces must be de-glossed prior to coating.
  • This product is only designed to be used on unpainted masonry surfaces that have been allowed to cure(dry) at least 30 days with a moisture content below 15% before application.
  • Do not apply to shiny or slick surfaces or loss of adhesion may occur; these surfaces can be prepared with chemical etchers and/or sandblasting.
  • Mold or Mildew Covered Surfaces: Wash the area with a mildew remover, rinse with water and allow to dry before priming.
Application
  • Eye protection is recommended.
  • Use only when temperatures are between 50°F (10°C) and 90°F (32°C).
  • Stir thoroughly before and occasionally during use. Apply using a brush, roller or spray.
  • For best results apply 2 coats and apply with airless sprayer. Backroll each coat working the material into the surface filling the masonry pores and voids.
  • Prime the entire surface to ensure a uniform appearance of the topcoat.
  • May be tinted with up to 2 ounces (59 ml) of universal colorant per gallon.
  • For airless spray applications, tip size should be .019 - .025.
Dry Time
  • Dries to touch in 1hour at 77°F (25°C) and 50% humidity. Application at lower temperatures, high humidity or poor ventilation will affect dry time..
  • Recoat or topcoat after 2 hours.
  • Full Cure: 7 Days
Clean Up & Disposal
  • Clean equipment and paint splatters with warm, soapy water. If spilled, contain material and remove with an inert absorbent. Dispose of contaminated absorbent, container and unused product in accordance with all current federal, state and local regulations.
  • Do not dispose of this product down a drain. Please consider donating any unused product. For recycling or disposal information contact your local household refuse collection service.

To consult with a Behr Certified Coatings Professional, call BehrPro Hotline Toll Free number at 1-877-776-3961 (U.S.A. only).

Read Application Instructions

LIMITED WARRANTY

For one year from the date of purchase, Behr Process Corporation warrants to the original consumer purchaser, (1) that the product meets Behr Process Corporation’s manufacturing specifications, and (2) the performance of this product when applied according to the label instructions and specifications. If this product is found not to perform as specified on the label within one year from the date of purchase, Behr Process Corporation will, at its option and upon presentation of proof-of-purchase (the original receipt), either furnish an equivalent amount of new product or refund the original purchase price of this product to you. This warranty excludes (1) labor and costs of labor for the application or removal of any product, and (2) any incidental or consequential damages, whether based on breach of express or implied warranty, negligence, strict liability or any other legal theory. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.​ To the extent permitted by applicable law, any implied warranties including the implied warranties of merchantability and of fitness for a particular purpose, are limited to the duration of this express warranty. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. This warranty gives you specific legal rights and you may also have other rights, which vary from state to state.​ Note to residents of the State of New Jersey: The provisions of this warranty, including its limitations, are intended to apply to the fullest extent permitted by the laws of the State of New Jersey.​ To obtain warranty service, call 1-800-854-0133. Behr Process Corporation reserves the right to inspect any and all application of the product prior to processing your claim made under this warranty.

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