How To Seal Garage Floor

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Concrete is an excellent material for a garage floor because it is durable and easy to clean. However, unsealed concrete can stain easily and is susceptible to damage from salt, oil, and gas. A good sealer will protect your concrete floor from these stains and damages. Learn how to seal garage floor.

In this article, we will show you how to seal a garage floor and protect it from stains and damage.

How to Seal a Concrete Floor from Moisture

  • Difficulty: (Will need some or similar experience)
  • Time: It May take you 2 to 5 days

Tools and Materials:

  • Concrete floor sealer of your choice
  • Stiff-bristled broom
  • Pressure washer or hose
  • Protective tools like gloves and a face mask
  • Painters’ tape, etchant
  • Lint-free paint roller or sprayer
  • Paintbrush, and/or floor wax (optional).

Steps To Follow

1. Buy the Sealer of Your Choice

The first step is to choose the right sealer. Many types of concrete floor sealers are available on the market, but not all are created equal. Some are designed for indoor use only, while others can be used both indoors and outdoors. You’ll also want to consider the type of traffic that will be using the floor. If you have a high-traffic area, you’ll want to choose a durable sealer that can withstand a lot of wear and tear.

2. Choose the Optimal Day

You’ll also need to consider the weather when you’re applying the sealer. Sealers can be applied in both warm and cold weather, but you’ll want to avoid applying the sealer on a day that is too hot or too cold. If it’s too hot, the sealer will dry too quickly and won’t have a chance to properly bond with the concrete. If it’s too cold, the sealer will take longer to dry and may not adhere properly to the concrete.

3. Prep Your Garage Floor

Before you begin, you’ll need to clean your garage floor and make any necessary repairs.

4. Clean and Clear the Area 

The next step is to clean and clear the area where you’ll be applying the sealer. This means sweeping and mopping the floor to remove any dirt, dust, or debris. You may also want to use a pressure washer or hose to clean the floor. Once the floor is clean, allow it to dry completely before moving on to the next step.

5. Fill Any Cracks

Once the floor is clean, you’ll need to fill any cracks or holes that are present. You can use a concrete patching compound for this purpose. Simply apply the patching compound to the cracks or holes and allow it to dry completely.

6. Ventilate the Space

It’s important to ventilate the space well when you’re applying the sealer. This means opening any windows or doors that are present in the garage. You may also want to use fans to help circulate the air.

7. Apply Your Sealer

Once the floor is clean, dry, and free of any cracks or holes, you’re ready to apply the sealer. Start by taping off any areas that you don’t want to get sealer on, such as walls or baseboards. Then, apply the sealer to the floor using a lint-free paint roller or sprayer. Work in small sections and make sure that you evenly coat the entire floor. 

8. Apply Another Coat of Concrete Sealer

If you want, you can apply a second coat of sealer to the floor. This isn’t necessary, but it will provide an extra layer of protection.

9. Wax Your Floor (Optional)

Once the sealer is dry, you can apply a layer of floor wax if you’d like to make it look shiny and new. This step is completely optional, but it’s a good way to protect the floor and make it look its best.

Congratulations! You’ve successfully sealed your concrete floor.

10. Why Seal Concrete Garage Floor

Sealing a concrete garage floor is one of the best ways to protect it from staining, fading, and other damage. A sealer will also make it easier to clean the floor and keep it looking its best. Sealing is an easy process, but it’s important to choose the right sealer and apply it correctly in order to get the best results.

What Type of Garage Floor Sealer Should I Use?

You can choose from a variety of different types of garage floor sealers:

Acrylic Sealer 

5 GAL Armor AR350 Solvent Based Acrylic Wet Look Concrete Sealer and Paver Sealer

This type of sealer is typically used on indoor floors because it’s not as durable as other types of sealers. Acrylic sealers provide a high-gloss finish and can be applied by roller, brush, or sprayer. This is a fantastic option for homeowners concerned about the effects of chemicals on their garage flooring.

Silane/Siloxane Sealer 

5-Gal. SX5000 WB DOT Approved Water Based Silane Siloxane Penetrating Concrete Sealer, Brick Sealer, and Paver Sealer

This type of sealer penetrates deep into the concrete and forms a barrier on the surface to repel water, oil, and other liquids. Silane/siloxane sealers can be used on both indoor and outdoor floors. In cold areas, homeowners may benefit from these sealers.

Polyurethane Sealer 

Eco-Poly Polyurethane Sealer & Floor Finish, Wood Floor Sealer & Concrete Sealer, Non Toxic Water Based Sealer (5 Gallon, Matte)

Polyurethane sealers are more durable than acrylic sealers and are often used on outdoor concrete surfaces. They provide a high-gloss or semi-gloss finish and can be applied with a roller, brush, or sprayer.

Epoxy Sealer

Marine-Tex RM330K Gluvit Waterproof Epoxy Sealer - 2 lbs.

Epoxy sealers are the most durable type of sealer and are often used on floors that see heavy traffic. They provide a high-gloss finish and can be applied with a roller, or brush. It also is the most expensive type of sealer.


Sealing your garage floor is a great way to protect it from damage and keep it looking its best. The process is easy, but it’s important to choose the right sealer and apply it correctly in order to get the best results.

With a little bit of time and effort, you can have a beautiful, protected garage floor that will last for years to come. Thanks for reading!

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