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How to seal concrete

How to seal concrete

In this article, we discuss how to seal concrete. To buy and know the price of super lubricant, tile adhesive, anti-acid mortar, rebar planting adhesive, concrete restorer, epoxy and antifreeze grout, etc., you can contact Shimi Abadgaran company.

How to seal concrete

The sealer protects the concrete from the elements and makes it easier to clean up de-icing salts, oil or grease. But you must do it well. Follow these step-by-step instructions for the complete program.


  • asphalt brush
  • paint sprayer
  • paint roller
  • spatula
  • Shop vacuum


  • Chemical stripper
  • concrete repair
  • Concrete sealant
  • Degreaser

What is sealant and when should it be used?

Concrete sealant is a protective barrier that extends the life of concrete and makes cleaning easier. If your concrete is new, you should allow it to dry. Wait at least one month before applying the sealer. Check the weather before using it. The sealer must be applied in dry conditions as it will not adhere to wet concrete. Temperatures must also remain above 50 degrees Fahrenheit during application and drying, which can take up to three days.

Prepare the surface

Follow the steps below to prepare the concrete surface for waterproofing.

Clean the concrete

Step 1: Clean the surface

First, sweep the entire surface of garbage and dirt completely.

Step 2: Deep cleaning

Remove any grease, oil, mastic or paint. Choose your cleaner based on the stains you have. For example, a degreaser is used to remove grease or oil. If you have laid carpet or tiles, the remaining mastic must be removed. Use a putty knife and a stiff brush as much as you can, and then use a citrus cleaner like orange blossom to remove the mastic.

Apply the cleaner of your choice and follow the manufacturer’s instructions.

good to know

Removing stains is very important at this stage. If your floor hasn’t been properly cleaned, it will show through your new sealer.

Step 3: Clean and dry

After the stains are removed, clean the floor with detergent and water. Use a shop vacuum to clean up residual water and debris. Allow to dry for 24 hours.

Step 4: Fill in the cracks

Any cracks or voids should be filled before applying the sealer. Apply concrete crack sealer to the damaged area and smooth it with a putty knife.

Remove the Old Sealer

Step 1: Sealer test

If a sealer has already been applied to your concrete, it must be removed before applying a new sealer. Not sure if sealer was used? Try this quick test: Pour a large cup of water on the concrete. If the water of the small seeds remains on the surface, it has already been sealed. If it sinks quickly into the concrete, it is not sealed.

There are different removal methods. Sandblasting is an option, but unless you are experienced in using the equipment, it is not recommended as you can damage the concrete if done incorrectly. The most effective way for the average person to tackle this project is to use a chemical thinner. Chemical strips are acid based and should be used with caution. Be sure to wear protective clothing, gloves, and goggles as specified by the chemical manufacturer.

good to know

There are also less toxic and environmentally friendly products made from soy or citrus that remove the existing sealer. It’s a safer alternative to harsh chemical thinners, but it takes longer to work.

Step 2: Remove the existing seal

Use a 1-inch roller or airless paint sprayer to evenly spread a thick layer of stripper over the concrete. Product times vary, so read the manufacturer’s instructions to determine how long it should sit on the concrete before removing.

Step 3: Scratch the surface

You should see bubbles or wrinkled areas forming on top. Use a long-handled scraper to remove the sludge and discard it. Contact your local waste center for the correct waste disposal method in your area.

Step 4: Clean and dry

Wash the floor with trisodium phosphate (TSP) and water. Then collect the remaining water with a shop vacuum cleaner. Allow the new concrete floor to dry for at least 24 hours before using it.

Apply the first layer

Step 1: Apply the first layer

If you’re covering a large area, a sprayer is a faster and easier way to apply concrete stain. For smaller areas, use a paint roller on an extension pole.

Apply the first layer, wait at least two hours before applying the second layer. Check your sealant can for specific drying times. Apply two thin coats to ensure evenness and uniformity.

good to know

If you are sealing an indoor concrete floor, make sure you have adequate ventilation.

Step 2: Apply the second layer

For even coverage, paint the second layer at right angles to your first layer.

Step 3: Allow to dry

Be sure not to step on or walk over your new caulk until it is completely dry. Be sure not to step on or walk over your new caulk until it is completely dry. Drying can take up to three days.

Read more: Epoxy rebar planting glue

Purchase and price of super lubricant, tile adhesive, anti-acid mortar, rebar planting adhesive, concrete restorer, epoxy grout and antifreeze company Shimi Abadgaran

With more than two decades in the field of production of chemical products for the construction industry, Abadgaran Chemical Company, in addition to producing more than a hundred types of construction chemical products, has a history of cooperation in implementation and consulting in large national, personal and corporate projects. Shimi Abadgaran Company has a large share in construction chemical products and has more than fifty production forces and laboratories. These are only a part of the extensive cooperation of chemical growers during these years. To buy and know the price of super lubricant, tile adhesive, rebar planting adhesive, anti-acid mortar, rebar planting adhesive, concrete repairer, epoxy and antifreeze grout and polymer mortars, anti-acid mortar, super lubricant and concrete repairer. , epoxy grout, anti-acid mortar, etc. You can contact Shimi Abadgaran company.

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