How to Seal Decorative Concrete Floors

Decorative concrete floors need a sealer to maintain its vibrant color and gloss. But preparation for the surface of a decorative concrete floor is different from a plainly-stained concrete floor; the former needs special types of cleaner and degreaser so as not to fade the painted design on the floor.

Tools and Materials

  • Neutral Concrete Cleaner
  • Natural Degreaser
  • Gloves
  • Mask or Respirator Mask
  • Decorative Concrete Sealer
  • Paintbrush or Roller Brush
  • Floor Finish (Wax)
  • Floor Buffer and Buffing Pads

Step 1 – Prepare the Surface

Remove the furniture and other items that may block the area. As much as possible, do not push the furniture when moving them to another place. This might scratch the concrete floor's surface and might scrape the decorative paint off the surface.

Purchase a neutral concrete cleaner and natural degreaser. Both of which have mild chemical contents that cleans and degrease a concrete floor’s surface without peeling or fading of decorative paint.

Prepare the neutral concrete cleaner by following the manufacturer's instruction. Usually, the cleaner is diluted to certain parts of water. Get the cotton mop and dip it on the cleaner, and then wipe the mop around the area. Rinse the floor with water. Allow to dry.

Next, get the degreaser and prepare the solution using the correct proportion indicated at the back of the bottle. Wipe the solution using a cotton mop. Leave on for a few minutes. Afterwards, rinse with water. Mop to dry. Repeat the application of degreaser if the area is a high-trafficked area or the floor’s surface is in regular contact with grease and oil (the kitchen, for example).

Turn on a dehumidifier and an electric fan to speed up the drying process, and to dry the floor thoroughly. A sealer would not adhere on a moist concrete floor surface.

Step 2 – Select a Sealer

Purchase decorative concrete sealer. This type of sealer is usually in clear color, although some come with tints perfect as a 2-in-1 stain/sealer. Select the clear color type. Sealer also comes in matte or gloss finish. Some sealers with gloss finish are slippery. Choose the less gloss type. Matte finish is perfect in kitchen concrete floors.

Step 3 – Apply the Sealer

Put on your gloves and mask. If you can borrow a respirator mask, do so and use it during the application of sealer. A sealer contains chemicals that may be harmful to the respiratory system when inhaled. There are a couple of cases of chemical pneumonia brought about by sealers.

Provide proper ventilation. Open windows and doors and turn on exhaust fans.

Apply a thin coat. Apply sealer in small sections. Get out of the room after applying sealer for 10 minutes to breathe in some fresh air outside and allow the solvent to evaporate into the air. Resume work after 5 minutes. Apply two (2) coats of sealer. You can make that three (3) for high-trafficked area. Allow 4 hours of drying time for every coat.

Step 4 – Buff and Maintain

Apply a floor finish wax to double the protection on the concrete floor. Attach the buffing pads on the floor buffer and buff the surface. Apply 3 coats for less-trafficked areas and 6 coats for high-trafficked areas.