Commercial Concrete Floor Sealing Service in Seattle


What is Commercial Concrete Floor Sealing?

Commercial concrete floor sealing is a process by which floor sealant is applied to concrete floors to protect the concrete slab underfloors from moisture that can cause damage. Some sealers stop dampness by blocking up the porous surface of the concrete, meaning it will no longer absorb water, whereas other types of sealers create a waterproof coating.

A concrete floor sealer can give one’s concrete long-lasting protection and reduces the need for reapplication. If concrete pores are not sealed up the concrete can absorb liquids and stain. Concrete floor sealing will prevent this by keeping liquids and debris on the surface, where they can be easily cleaned away.

Our Commercial Concrete Floor Sealing Installation Process

Step 1: Clean the Concrete

The concrete cleaning process involves thoroughly sweeping the floor to make sure all dirt or debris is removed. This will be followed by a good washdown.

Step 2: Remove Old Sealer

Before applying a new sealer, it is vital to make sure the old concrete floor sealer is completely gone. Leaving the remnants of an old sealer can decrease the effectiveness of the newly applied sealant, which may prevent proper adhesion to the concrete surface.

Removing an old concrete sealer can be done in one of two ways, such as mechanical or chemical. The mechanical way involves the use of a tool to physically grind, sand, or blast away the sealer, which can be noisy and damaging to the concrete.

The other method to remove sealer from a concrete floor is chemically and there is a variety of choices when it comes to which products one can use.

Step 3: Apply the Sealant

When applying a concrete sealant it is best to apply two thin coats, making sure the sealer doesn’t create puddles or form areas that seem uneven. The first coat of any concrete sealer is normally absorbed into the concrete at different rates leaving the substrate unevenly sealed, which makes two coats important.

The first coat of sealer acts like a primer and most of it will disappear into the concrete surface, whereas the second thin coat will provide an even finish, color enhancement, and gloss.

Step 4: Allow for drying

When using an acrylic sealer, the surface will be dry in approximately 4-12 hours, whereas stamped concrete sealer needs to stay dry for the first 36 hours. It is important to try and avoid water for 3-5 days.

Pros & Cons of Commercial Concrete Floor Sealing

Pros of Commercial Concrete Floor Sealing

  • Sealing concrete floors increases durability and will prevent cracking, scaling, and other common concrete problems.
  • Cost-effective for an industrial setting.
  • Sealed concrete floors are less slippery than uncoated ones, meaning they are safer to walk on.
  • Commercial concrete floor coatings protect floors against dust and moisture damage, as well as the harmful effects of weak acids, salts, and stains.
  • Commercial concrete floor sealing helps avoid floor deterioration and enhances floor color.

Cons of Commercial Concrete Floor Sealing

  • Concrete floor sealing can be slippery.
  • Regular maintenance may be necessary.
  • Resealing every few years is important.
  • Concrete floor sealing can be difficult to remove.

Types of Commercial Concrete Floor Sealing


This is the most affordable sealant and is recommended for both indoor and outdoor applications. Acrylic sealer is applied in a thin film that forms a resistant barrier that protects the concrete from chloride and water, while also allowing moisture in the concrete slab to escape.

It is available in a variety of sheens and is low in cost, as well as a fast-drying solution.

These acrylic concrete sealants are available in both water-based and solvent-based formulas.


Polyurethane’s concrete floor sealers are nearly twice as thick as an acrylic sealer and form a high-build protective film on the concrete surface that provides outstanding resistance to abrasion and chemicals, as well as a high-quality finish.


Epoxy sealers form a high-build protective film on the concrete surface which produces a hard, long-wearing, abrasion-resistant finish. They also offer excellent water repellency and are available clear or pigmented, if one wishes to add color. This type of commercial concrete floor sealing will provide a glossy finish.

FAQs – Commercial Concrete Floor Sealing

What Surfaces Should I Seal?

Any outdoor regions where concrete is subject to exposure to extreme temperatures such as freeze and thaw should be sealed. In other areas, concrete should be closed for purposes such as stain repellency, dust reduction, abrasion resistance, chemical resistance or to maintain a pleasant appearance.

What Happens if I don’t Seal My Concrete?

Concrete is a material that quickly absorbs liquids. In areas where concrete is subject to freeze-thaw climates, the expansion of frozen liquids can damage the surface of unsealed concrete. Concrete can also be discolored and damaged by oil, salt, fertilizer, and household chemicals if left unsealed.

How Much Does a Sealer Cost?

Concrete sealer costs on average between $1.20 – $1.75 per square foot when hiring a contractor, with factors such as the type of sealer contributing towards costs.

How Will My Sealed Surface Look?

Chemically reactive sealers are almost invisible to the eye because they penetrate the concrete. Acrylic resin sealers and epoxies create color enhancement and give concrete a high-gloss wet look, whereas water-based acrylic resin sealers provide moderate color enhancement and a satin appearance.

How Long Will My Sealer Last?

Reactive chemical sealers will last the longest which may be 10 years or longer. Epoxy or urethane generally lasts 5 to 10 years depending on traffic exposure and acrylic-resin sealers last for a duration of 1 to 3 years.

Commercial Concrete Floor Sealing Service Near You in Seattle, WA

For Seattle commercial concrete floor sealing, call Pacific Modular today to get a free quote or contact us via our convenient online form! We are ready to help you find the commercial concrete floor sealing that best matches all your needs!

Let’s see what your floors can be.