How To Seal A Cement Basement Floor

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The Importance of Sealing Your Basement Floor

If you have a cement basement floor, it is important to seal it properly. Sealing your basement floor can prevent moisture from entering your home, which can cause mold and mildew to grow. It can also prevent water damage to your possessions and the foundation of your home.

What You Will Need

Before you begin sealing your basement floor, you will need a few supplies. You will need a concrete cleaner, a concrete sealer, a paint roller, a paint tray, and a paintbrush. You may also need a scraper to remove any old sealant.

Preparing Your Floor

The first step in sealing your basement floor is to prepare the surface. Start by removing any furniture or items from your basement. Then, use a concrete cleaner to clean the floor thoroughly. Allow the floor to dry completely before moving on to the next step.

Sealing Your Floor

Once your floor is clean and dry, you can begin sealing it. Start by pouring the concrete sealer into the paint tray. Use a paint roller to apply the sealer evenly to the floor. Be sure to work in small sections, so the sealer doesn’t dry before you can spread it evenly.

Finishing Touches

After you have applied the sealer to the entire floor, use a paintbrush to touch up any areas that the roller missed. Allow the sealer to dry completely before moving any furniture back into your basement.


It is important to maintain your sealed basement floor to ensure it continues to do its job. Sweep or vacuum the floor regularly to keep it clean. If you notice any cracks or damage, repair them as soon as possible to prevent moisture from entering your basement.


Sealing your cement basement floor is an important step in maintaining a healthy and safe home. By following these simple steps, you can ensure that your basement is protected from moisture and water damage. Remember to maintain your sealed floor to ensure it continues to do its job for years to come.