How to Seal Concrete Floors: A Simple Step by Step Guide

Prepare Baseboards 

If your concrete floor is in a finished room, remove the baseboards to protect them from the sealer. You can also cover them using painter's tape if you don't want to remove them. Use caution as you get near the baseboards if you leave them installed.

Clean the Floor 

Starting with a clean floor is essential for getting a good seal. If the floor has dirt, grease, or other debris on it, the sealant won't stick properly. You might notice bumps or an uneven finish if there's dirt or other things on the floor.

Sweep or vacuum the floor to remove the debris. Mop the floor with a mild cleaner.

Mineral spirits or trisodium phosphate can remove greasy spots and stains. Rinse the floor completely after using any type of cleaner.

Let the floor dry completely before applying the sealer.

This is also a good time to fix any cracks in the floor. Fill in the cracks with concrete repair caulk. Use a trowel to smooth out the caulk.

Choose Sealer 

You have several sealer options for your concrete floor.

Acrylic sealers are easy to apply. They sit on top of the concrete and don't provide as much protection.

Epoxy also sits on top, but it's more durable and protects against grease. It can be more complicated to apply.

Silane or siloxane sealers penetrate the concrete, so they provide protection against liquids and deterioration.

Apply Floor Sealer 

Ventilate the room well before you start sealing the floor. No matter what type of sealer you use, the fumes can be dangerous.

Plan your approach for sealing the floor so you don't trap yourself in a corner. Work from the side opposite your planned exit so you end up at the door when you're done.

Use a paintbrush to apply the sealer along the edges of the room. A brush gives you more control.

Use a paint roller to apply the sealer to the rest of the floor. The roller helps you cover ground more quickly. Overlap the passes to help smooth out the sealer and avoid lines.

It's best to apply thinner coats for a smooth finish. If you put a thick layer on, it's likely to look blotchy or be uneven.

Let the sealant dry completely before walking on it or putting anything on it.

Some types of sealant might require two coats for thorough coverage. Wait to apply the second coat until the first is completely dry.

Learn How to Seal Concrete Floors 

When you seal concrete floors, you protect the concrete from stains and damage. Following the basic steps ensures you get a smooth finish with good results.

Are you ready to restore your concrete and tile surfaces? Explore our services to see how Desert Tile & Grout Restore can help.