Penetrating Sealers For Garage Floors and Workshops
Below are the commercial-quality concrete sealers and densifiers available for purchase at the best prices from professional vendors we trust and recommend. They are listed by category for easier reference. We will list any sales or discount codes below when they are available.
Concrete sealers for garage floors and workshops are easy to apply, non-film-forming, and do not change the appearance or wet slip resistance of bare concrete. They penetrate the concrete surface to form a hydrophobic gel-like molecular barrier at the subsurface that repels water, salt, and other contaminants. New to the market are oleophobic sealers that also repel oils and solvents. You can read our article on garage floor sealers to learn more.
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Densifiers
Densifiers react with minerals in the concrete to help fill pores and make the surface more dense. This results in a harder surface, increasing its strength and durability. They are a popular choice for workshops and busy garages. Densifiers do not repel liquids like sealers. However, the denser surface helps to reduce stains, moisture intrusion, and dusting. They also do the best job of reducing moisture vapor from under a slab. Lithium densifiers are the most common. They are easier to apply, react more quickly, and provide greater strength.
PS103
PS103 by Concrete Sealers USA. Our #1 pick for the best value. Zero VOCs and increases concrete strength up to 40%. Only 1-2% less lithium than other competitors we recommend but at almost half the price. Steller customer service.
L3000
L3000 by Foundation Armor. Our #1 pick for best performance. It has one the highest amounts of lithium and increases concrete strength up to 45%. It performed very well for us in our review here. Zero VOCs and free shipping are included.
Lithi-Tek 4500
Lithi-Tek 4500 by GhostShield comes in a concentrated formula that can make up to 2 gallons. It increases abrasion resistance by up to 50%. Listed as an Amazon’s Choice for densifiers, it has great reviews.
Densifiers with Sealers Added
Known as hybrids, these densifiers with added sealers are among the best general-purpose concrete sealers available. A great choice for workshops and garage floors, these hybrids densify and seal the concrete in a single application. Unlike a standard densifier, they repel water and moisture, thus preventing mold, mildew, pitting, and freeze-thaw damage. They also help reduce stains and dirt buildup and are among the best performers in terms of value and protection in a single application.
PS104
PS104 by Concrete Sealers USA is a lithium densifier with a siliconate sealer added. Our #1 pick for the best-performing all-purpose sealer. Zero VOCs, increases concrete surface strength for increased durability, and repels water. The siliconate sealer protects from mold, mildew, salts, deicing fluids, and general dirt buildup. Steller customer service.
Lithi-Tek 9500
Lithi-Tek 9500 by GhostShield is a lithium densifier with a proprietary sealer added. Our #1 pick for best value. It is a concentrate that can make up to 5 gallons. Zero VOCs, increases surface strength, durability, and repels water to protect from mold and mildew and freeze-thaw damage. Does not protect against salt damage. An Amazon’s Choice pick with good reviews.
Water and Salt Repelling Sealers
These water and salt-repelling concrete sealers are available in siliconate and silane siloxane formulations. They work to penetrate deep into concrete to provide good protection against water intrusion, salt, mold, mildew, and dirt buildup. They also protect against freeze-thaw damage, pitting, and spalling, and help reduce concrete surface stains. Siliconate sealers generally provide slightly better protection. Silane siloxane sealers can also be applied to brick, stone, and masonry.
PS101
PS101 by Concrete Sealers USA is a siliconate concrete sealer and a good value for all-purpose protection in one application. Recommended for smoother concrete. Zero VOCs, repels water, and protects against mold, mildew, salts, deicing fluids, and general dirt build-up. Steller customer service.
SC25
SC25 by Foundation Armor is a siliconate sealer and salt guard intended for white and light colored concrete. All-purpose protection in one application. Zero VOCs, repels water, and protects against mold, mildew, salts, deicing fluids, and general dirt buildup. Shipping is free.
PS102
PS102 by Concrete Sealers USA is a siliconate concrete sealer designed for broom finished concrete and more porous concrete surfaces such as walkways, patios, and driveways. Can be used to cure broom finished concrete. It provides the same protection and benefits as PS101.
Formula 137™
Formula 137 by Legacy Industrial is a silane siloxane sealer with a small percentage of silicate added to help harden concrete. Our #1 pick for a water repelling sealer. Protects against mold, mildew, and salt. Also resistant to oil. A good choice for workshops and garage floors.
Oil-Repelling Sealers
Oil-repelling concrete sealers are a fairly new category and are the best-performing penetrating sealers available for garage floors, workshops, automotive shops, and machine shops. In addition to repelling water and salt, these sealers use fluorocarbons to repel oil and solvents. Known as oleophobic, this oil-repelling tendency is unmatched by water-repelling sealers in reducing stains from oil, chemicals, and petroleum-related products.
PS100
PS100 by Concrete Sealers USA is a fluoronated water, salt, and oil-repellant concrete sealer for smooth troweled finishes. Our #1 pick for best performance and value. You can read our review here. Exhibits excellent oil-repelling traits. Highly effective at reducing oil stains. Protects against salt damage, mold, mildew, freeze-thaw damage, and general dirt buildup. Does not require a densifier to be applied first. Low VOC content.
Siloxa-Tek 8510
Siloxa-Tek 8510 by GhostShield is a fluoronated silane siloxane water, salt, and oil-repelling sealer. You can read our full evaluation here. Exhibits excellent oil-repelling traits. Very effective at reducing oil stains. Protects against salt damage, mold, mildew, freeze-thaw damage, and general dirt buildup. GhostShield highly recommends applying Lithi-Tek 4500 densifier first to obtain the best results. Solvent-based with a VOC content of 100 g/l.
Questions?
If you have questions about using a penetrating sealer or about choosing the best one for your requirements, please let us know below. We will be happy to assist you with your concrete sealing needs.