KILZ® Bonding Primer

KILZ® Bonding Primer

Where To Buy

KILZ® Concrete & Masonry Bonding Primer is specially formulated to optimize the adhesion of masonry coatings. With proper application, this product provides a sound foundation for coatings with excellent resistance to water, high pH and efflorescence. It can be used on uncoated interior/exterior surfaces such as: concrete, masonry, stucco, cinder block and any porous stone or brick. Do not use on coated surfaces. Not designed for use on wood, metal or silicone treated surfaces. Use only on porous surfaces. NOTE: SOME SURFACES MAY APPEAR SLIGHTLY DARKER AFTER PRODUCT DRIES.

Available in Gallons

Please check availability before visiting your local retailer

  • Ratings & Reviews
  • Preparation, Application & Clean-Up
  • Warranty / Warnings
  • Product Specifications
KILZ® Bonding Primer is rated 4.9 out of 5 by 9.
Rated 5 out of 5 by from Great primer for painted concrete orbs I made some orbs for my outdoor space and primed them with Kilz! It worked amazing! I then painted them a metallic gold Andy the paint has withstood two Iowa Winters! I am super impressed with it
Date published: 2021-01-19
Rated 5 out of 5 by from Great Product So glad i chose this product to prime my three season room cement floor!! Worked wonders.
Date published: 2020-07-27
Rated 5 out of 5 by from Covers well I bought this to paint retaining wall it does a great job covering all surfaces
Date published: 2020-04-24
Rated 5 out of 5 by from Great product We have used kilzs for years ! And have never been let down with this product!"
Date published: 2020-04-23
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The following steps and products are required.

  • Proper surface preparation is required.

  • New concrete must cure for a minimum of 30 days prior to priming.

  • Patch all holes and cracks and allow to dry.

  • Do not apply over previously coated surfaces. For touch-ups where surface coatings have failed, completely remove any loose or peeling paint. To completely strip previous coatings, use KILZ Concrete & Masonry Paint Stripper.

  • For proper penetration and adhesion of primer, use KILZ Concrete & Masonry Cleaner & Etcher to clean and etch the surface.

  • Sprinkle a few drops of water onto the surface. If water is quickly absorbed, the surface is ready. If not absorbed strip or re-etch. Follow all label instructions.


  • For best results, apply when air and surface temperatures are between 50-90°F.

  • Stir primer thoroughly before and occasionally during application. DO NOT DILUTE.

  • Apply using a high quality pump sprayer, 1/4"-3/8" nap roller, nylon/polyester brush, pad applicator.

  • COVERAGE: 350-500 sq. ft.

Dry Time

  • Dries to the touch in 2 hours. Longer dry time required in cooler temperatures and higher humidity. Must apply a topcoat after at least 4 hours, but before 30 days. Primer must be topcoated within 30 days of application.

Clean-Up & Disposal

  • Use any commercially available brush cleaner. Note: Do not use soap and water to clean brushes or other applicators as they will become gummy. Dispose of contaminated absorbent, container and unused product in accordance with all current governmental regulations.

  • Do not dispose of this product down a drain. For recycling or disposal information contact your local household refuse collection service.

Cautions / Limitations

  • Must apply a topcoat after at least 4 hours, but before 30 days.

  • Protect from freezing.

  • For best results, apply at temperatures between 50°F - 90°F. Temperatures above 90°F may affect the application such as drying too fast. Avoid applying in direct sun. NOTE: If the surface is hot to the touch it should be considered too hot to apply this coating.

  • Avoid heavy traffic for 24 hours.

  • Shelf life under normal conditions is two years unopened.

  • Must be top-coated within 30 days.

*Limited Warranty

Masterchem Industries LLC warrants that this product will be free of defects in materials and workmanship for one (1) year from the original date of purchase. This warranty is not transferable. If this product is found to be defective upon inspection by our representative, Masterchem Industries LLC 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. This warranty gives you specific legal rights and you may also have other rights, which vary from state to state. To make a claim under this Limited Warranty, write to Technical Service, Masterchem Industries LLC, 3135 Old Highway M, Imperial, MO 63052-2834, or email Technical Service at

General Information



If you scrape sand or remove old paint, you may release lead dust. LEAD IS TOXIC. EXPOSURE TO LEAD DUST CAN CAUSE SERIOUS ILLNESS, SUCH AS BRAIN DAMAGE, ESPECIALLY IN CHILDREN. PREGNANT WOMEN SHOULD ALSO AVOID EXPOSURE. Wear a NIOSH approved respir tor to control lead exposure. Clean up carefully with a HEPA vacuum and a wet mop. Before you start, find out how to protect yourself and your family by contacting the National Lead Information Hotline at 1-800-424-LEAD or log on to

WARNING: This product contains chemicals known to the state of California to cause cancer and birth defects or other reproductive harm.

CAUTION! Stained Surfaces may become slippery when wet. Use caution when walking on surface when moisture is present.

Warning! Irritant!

HARMFUL IF SWALLOWED. CONTAINS: ETHYLENE GLYCOL. MAY CAUSE EYE, NOSE AND THROAT IRRITATION. AVOID CONTACT WITH SKIN AND EYES AND AVOID BREATHING OF VAPORS AND SPRAY MIST. WEAR EYE PROTECTION AND PROTECTIVE CLOTHING. USE ONLY WITH ADEQUATE VENTILATION. To avoid breathing vapors and spray mist, open windows and doors or use other means to ensure fresh air entry during application and drying. If you experience eye watering, headaches or dizziness, increase fresh air. If properly used, a respirator (NIOSH approved for organic vapor with P series particulate pre-filter) may offer additional protection; obtain professional advice before using. A dust mask does not provide protection against vapors. Avoid contact with eyes and skin. Wash thoroughly after handling. Close container after each use.

First Aid

  • If you experience difficulty in breathing, leave the area to obtain fresh air. If continued difficulty is experienced, get medical assistance immediately.
  • In case of eye contact, flush immediately with plenty of water for at least 15 minutes and get medical attention.
  • For skin, wash thoroughly with soap and water.
  • If swallowed, get medical attention immediately.


  • Base


  • Int/Ext


  • Color


  • Coverage Rate

    350-500 Sq. Ft./Gal. depending on application method and substrate porosity. Does not include the loss of material from spraying.

  • Coverage - Low

    350 sq. ft.

  • Mils Wet


  • Mils Dry


  • Coverage High

    500 sq. ft.

  • Mils Wet


  • Mils Dry


  • VOC

    100 g/L

  • Volume Solids


  • Weight Solids


  • Viscosity

    19-41 sec. #2 Zahn

  • Flashpoint