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USA Sale Office - Tennis Universal Inc.(USA) Chicago, IL Telephone:  800 263-8800
Head Sale Office - Tennis Universal (Canada) P.O. Box 4258 Edmonton, Alberta  Canada T6E 4T3 Telephone: 800 263-8800
Repair & Coating Guidelines Flow Chart

Concrete Surface Preparation

Concrete Court Surface Preparation (Tennis and Basketball Courts)


New Concrete Courts

A new concrete court must cure for a minimum of 28 days. Preparation of a new concrete sport surface for color coatings requires two additional steps not required with new asphalt courts.  Following the 28 days cure time, new concrete surfaces should be acid etched and thoroughly rinsed prior to commencing coating applications. Acid-etching is a common process for new concrete and appropriate products can be purchased from your local hardware store. After completing the acid-etching process, MultiAcrylic™ Adhesion Promoter should be applied to all bare concrete (new or existing) to ensure excellent adhesion of color coatings.


To view MultiAcrylic™ Adhesion Promoter, click here.



  • Read and follow all instructions provided on the acid-etching product purchased before using. Follow acid manufacturer's dilution and safety instructions. If the instructions are not clear, contact the acid manufacturer before proceeding.
  • PROTECTIVE CLOTHING & SAFETY EQUIPMENT:  Wear safety goggles and rubber gloves. Always wear long pants and a long sleeve shirt when working with acid. Wear something old in case of clothing damage.
  • ACID ETCHING INDOORS:  If acid etching indoors, ensure good ventilation during application and drying.
  • Close acid containers when not in use.
  • Keep out of reach of children and animals.


    1. Follow dilution directions on acid container.
    2. When applying diluted acid to surface, always begin on the high side of the surface slope. Beginning at the top of the slope, using a nylon or polypropylene brush or broom, apply diluted mixture over as large of area as can be covered in a fifteen minute period.
    3. Allow to sit for 5 minutes or until foaming ceases.
    4. Starting at the beginning point, thoroughly rinse the etched area with water.
    5. Repeat process until entire surface has been etched. A standard tennis court with dimensions of 60' x 120' will likely take 2-3 hours to acid etch.



    MultiAcrylic™ Adhesion Promoter

    After acid etching, it is necessary to apply MultiAcrylic™ Adhesion Promoter; it is a primer for concrete which promotes excellent adhesion of repair color coating products. MultiAcrylic Adhesion Promoter is a 100% acrylic emulsion and can be applied by spray, roller or brush. MultiAcrylic Adhesion Promoter is ready to use; requires no dilution. Once you have applied the adhesion promoter, you are ready to apply your MultiCover™ base coat.

    Important Note: We recommend MultiAcrylic Adhesion Promoter and MultiCover™ Acrylic Resurfacer be applied the same day. If you do not have the time to complete MultiAcrylic Adhesion Promoter and MultiCover Acrylic Resurfacer the same day, wait until a day you have adequate time to complete both applications. Drying time to the touch for adhesion promoter is approximately 1 hour; after this hour MultiCover coating should be applied.


    To view MultiAcrylic™ Adhesion Promoter, click here.


    To view MultiCover™ Acrylic Resurfacer, click here.



    Existing Concrete Courts Which Have Been Previously Color Coated Or Older Concrete Courts Which Have Never Been Coated:


    Existing and/or older concrete courts must be thoroughly power washed prior to commencing repairs or coating applications. The power washer should have a fan or rotary style nozzle and pressure of 2000-2200 psi (lbs. per sq. inch). All peeling loose material should be removed to ensure longevity of repairs and new color coatings. Any bare concrete areas should receive an application of MultiAcrylic™ Adhesion Promoter prior to commencing coating applications.


     Feel free to contact us at 1-800-263-8800
    for assistance with products

    or to receive an estimate for your court.



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