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See all Floor coating how-to »

Preparation of Uncoated Concrete for Sealers

Skill:  Intermediate DIY'er

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 Supplies

  • Broom (Stiff Bristle)
  • Brush (2"-2")
  • 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 BEHR PREMIUM Concrete & Masonry Cleaner & Etcher. 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.