How-to Prepare Uncoated Concrete for Sealers | Behr

Preparation of Uncoated Concrete for Sealers

A great looking finish begins with the right start. Following the proper prep procedures will dramatically affect the look and longevity of your finished project.

For Best Results:

New concrete must cure for 30 days before applying any floor treatment.

For your safety, please wear protective clothing, eye goggles, and acid-resistant rubber gloves and footwear.

Suggested Tools & Supplies
  • Broom (Stiff Bristle)
  • Brush (2"-2½")
  • Chemical Resistant Gloves
  • Hose
  • High Pressure Nozzle

  • Mop
  • Protective Apparel
  • Rags

How to Clean and Etch a Concrete Surface

  • Step 1

    Make sure the surface is clean. Wipe up all oil and grease spills. Sweep and scrape away all dirt and loose contaminants with a broom.

  • Step 2

    If the surface is new or uncoated, use a product to clean and etch the surface. Use a plastic watering can to evenly distribute the product. Spread the product with a stiff bristled, non-metal brush or broom. Allow the product to stand for 10-20 minutes.

  • Step 3

    Using a stiff bristled, non-metal brush or broom, vigorously scrub the concrete surface. DO NOT allow the surface to dry.

    TIP: Heavily stained areas or older stains may require additional applications.

  • Step 4

    Thoroughly rinse the surface with clean water using either a garden hose with a high-pressure nozzle or a pressure washer. Prevent the rinse solution from entering the storm drains.

  • Step 5

    Remove excess water with a non-metal squeegee or mop.

  • Step 6

    Allow the surface to dry. The surface is ready for priming when it feels like medium grit sandpaper and no residue or loose concrete remains.

    TIP: To avoid adhesion issues, ensure the surface is clean by wiping your fingers over the surface to check for dust. If residue is present, repeat the rinsing step.

ADDITIONAL RESOURCES
Orange calculator icon in a white bubble

PAINT AND STAIN CALCULATOR

Inside or outside; paint or stain: Let’s figure out how much you’ll need to make amazing happen.

Calculate

ASK AN EXPERT

Every project is unique: Keep small wrinkles from becoming big problems by letting the Behr Technical Experts lend a hand.

Get Expert Help

CONNECT WITH PRO REFERRAL - POWERED BY THE HOME DEPOT

Let Pro Referral do the leg work and match you with quality local painters.

Find a Painter
CUSTOMIZE & BUY
Tahitian sky
Small Behr logoS480-5
Compare
BLACK
BLACK
What sheen do I need?
8 Oz. Sample
1 Gallon
1 Quart
5 Gallon
The following product(s) is required to properly prep uncoated and previously coated concrete surfaces.
Required product
BEHR PREMIUM ALL-IN-ONE WOOD CCCC
$0.00
The following product(s) is required to properly prep uncoated and previously coated concrete surfaces. Only available in store at Home Depot.
Required 3rd party product
BEHR PREMIUM ALL-IN-ONE WOOD CCCC
The 9 in. x 1/4 in. Polyester Adhesive Roller Cover has a hard texture, making it ideal for applying all types of adhesives to smooth surfaces. It can be used for stippling and applying sand paints.
The following product(s) is recommended when a topcoat clear finish is desired.
$0.00
The Home Depot logoSold Exclusively at The Home Depot