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How to Seal Concrete Countertops: 4 Simple Steps
Seal the deal with your concrete countertops
Get quotes from countertop and backsplash pros near you
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Get quotes from countertop and backsplash pros near you
No obligation · 100% free
SKILL LEVEL
Easy
COMPLETION TIME
2 days
COST
$43–$135
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What you'll need:
TOOLS
- Roller or brush
- Microfiber cloth
SUPPLIES
- Concrete countertop sealer
- Food-safe lacquer
Concrete countertops have numerous benefits, like durability, longevity, heat resistance, and customizability. However, if left unsealed, they can be prone to staining. Sealing your concrete countertops ensures they can withstand everyday messes in your kitchen without looking worn after a few weeks. This guide explains how to seal concrete countertops properly so you can enjoy your kitchen for years to come.
Choose the Right Type of Sealer
Photo: Bill Oxford / iStock / Getty ImagesThe first step in sealing concrete countertops is choosing the best sealer. The three main types are acrylic, polyurethane, and epoxy.
Acrylic sealers penetrate the concrete countertops to give them a water-resistant matte finish. This type of sealer is relatively thin and may need to be reapplied every few years for continued effectiveness.
Polyurethane sealers can be water- or solvent-based. They are available in matte or gloss finishes and various shades, so you can stain your countertops at the same time. Reapplication may be needed after five to 10 years.
Epoxy sealers form a film on the concrete countertop and fill any rough areas to give the countertop a uniformly smooth finish. Epoxy should last the life of the concrete and won’t need reapplication like acrylic or polyurethane sealers.
Apply the Sealer to the Concrete
Use a brush or roller to apply your chosen sealer to the concrete countertop. Apply in thin strokes to avoid oversaturating the countertop. Carefully wipe off any excess sealer with a microfiber cloth, then let the countertop dry for 24 hours.
Apply a Second Coat
Depending on which type of concrete sealer you choose, you might need to apply a second coat once the first is completely dry. Apply the second coat the same way as the first, using thin, even strokes, wiping up any excess as you go.
Apply a Coat of Food-Safe Lacquer
If you want, you can apply a final coat of food-safe lacquer to create a shiny, polished look. Apply carefully with a brush and apply a second coat after 24 hours if needed. Let the concrete countertops cure for three days before using them to ensure the lacquer has set properly.
When to Seal Concrete Countertops
Sealing concrete countertops is essential because it is a porous material. Unsealed concrete countertops will soak up spills, resulting in unsightly stains that are impossible to remove. If you choose concrete as your countertop material, ensure you’ve worked sealing into your schedule and budget.
You may also need to re-seal your concrete countertops after a few years to keep them in good shape—especially if you use an acrylic or polyurethane sealer. Epoxy is longer-lasting and less likely to require reapplication.
DIY vs. Hiring a Pro
Sealing concrete countertops can be a DIY project if you’re comfortable working with stains or sealants (and especially if you installed the concrete countertops yourself). Concrete sealant costs between $0.75 and $2.50 per square foot if you purchase and apply it yourself. Paint brushes cost $5 to $12 each, depending on the type. In all, this is a very affordable project if you opt to do it yourself.
DIY concrete countertop sealing can be time-consuming. If you don’t have the time or know-how to tackle this project, you may prefer to hire a local countertop contractor to seal your countertops. Concrete sealing costs are low whether you DIY or hire a pro. Hiring a pro to seal a 50-square-foot concrete countertop will cost between $65 and $150, including labor.
Frequently Asked Questions
Countertop and backsplash services reviews from real Angi homeowners in Columbus, OH
4.5★ avg. • 35 total reviews
- Eric T.
Corey Carr was great. I had damage from a recent storm and needed to have my mast and other components replaced. The project entailed coordinating with AEP, and Corey helped make a stressful situation a lot less stressful. I really appreciated his dedication to service and the job very well done.
Mr. Electric of Columbus - Peggy B.
I recently moved to another state and chose United Trust Van Lines after comparing several companies. Their team was punctual, professional, and extremely careful with my belongings. I was especially impressed with how they handled my home office setup and fragile items. Everything arrived on...
United Trust Van Lines, LLC - Jeanann S.
Very professional, knowledgeable and helpful! Completed the install on time and as expected.
Ward's Services - Adam E.
Cole has been handling plumbing and general contracting for our four properties over the past three years, and he’s always done a great job. Most recently, he installed a sink and countertop in our retail store where none existed before, and it turned out exactly how we needed. He’s...
ANB Renovations LLC - Tom T.
We have bought and sold numerous times over the past 50 years. Sherman Hall and Top Line are top notch. Thorough and detailed, he explains every possibility, probability, and eventuality. High class and pleasant. The best.
Top Line Home Inspections, LLC - Aaron G.
Very easy to talk to, helped me enormously and will be back for more projects I have. Quick and knowledgeable, very professional and a high quality personality!
Elwood's Mobile Welding - Stacy S.
Couldn't ask for a better company. Josh and Dee were Very professional, efficient, courteous and takes major pride in their work. They will travel to come to your home and will still give you a fair price. They are honest and trust worthy. Their focus is on their work and their work is...
Supreme brick & chimney - Scott S.
It was a difficult job and Robert and his son worked diligently to get it done.
- Carl D.
I had a tight deadline for a commercial painting project, and Custom Paint Jobs LLC delivered on time and within budget. Their efficiency and quality are top-notch.
Custom Paint Jobs, LLC - Kellyn D.
Koby and Kyle are amazing!! They were super fast and friendly, highly recommen!
All My Sons Moving & Storage
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