10 Best Polyurethane Concrete Sealers 2025 in the United States

Siloxa-Tek 8500 Ultra Concentrate is a high-quality, water-based concrete sealer designed to protect surfaces like concrete, pavers, brick, and stone from water and salt damage. Its main strength lies in durability, thanks to a powerful silane/siloxane formula that penetrates deeply without changing the look or feel of the surface. Unlike some sealers, it won’t peel or flake because it doesn’t form a film on top, which means it’s breathable and lets moisture escape, reducing issues like cracking and spalling caused by freeze-thaw cycles.

This product is especially good at resisting harsh chemicals like deicing salts, making it a solid choice for outdoor areas exposed to winter weather. Its UV stability is excellent, so it won’t break down or yellow under sunlight, keeping protected surfaces intact for years. The sealer leaves no glossy finish, maintaining a natural, non-slick surface which is safer for patios and walkways. Application is straightforward and flexible—you can use a sprayer, roller, or brush, covering about 250 square feet per gallon per coat. Because it’s highly concentrated, one gallon can make up to five gallons of ready-to-use sealer, which offers good value.

To get the best long-term results, especially on vertical surfaces, you might need a certified applicator, which could add to installation costs. Also, since it’s a penetrating sealer, it doesn’t provide a shiny or decorative finish if that’s what you’re looking for. In essence, Siloxa-Tek 8500 is ideal for those wanting durable, invisible protection against water, salt, and UV damage with minimal maintenance, but not for users seeking a glossy or colored result.

The Armor AR350 Low Gloss Wet Look Concrete Sealer is a professional-grade option designed to protect and enhance exterior concrete and pavers. It uses a solvent-based acrylic formula that offers a durable, low gloss finish with a wet look that darkens surfaces, which many users find visually appealing. It stands out for its strong durability, resisting damage from foot and vehicle traffic, abrasion, road salts, and various weather conditions including UV rays, which helps prevent yellowing over time. This makes it suitable for driveways, patios, pool decks, and more.

The sealer is easy to apply with a roller or sprayer and is self-priming, so maintenance and resealing are straightforward tasks. Coverage is decent at around 175-225 square feet per gallon. However, since it's solvent-based and has a VOC level of 700, it may have stronger fumes compared to water-based options and might require good ventilation during application. While it offers chemical resistance typical for acrylic sealers, it may not hold up as well against harsh chemicals as specialized polyurethane products.

The product also comes in formulations suitable for different state VOC regulations, which is helpful if local rules apply. If you're looking for a sealer that delivers lasting protection with enhanced color and a subtle wet look without a high shine, the Armor AR350 fits well, especially for outdoor residential or commercial concrete surfaces. Just be prepared for solvent-based application precautions.

Cryli-Tek 5505 is a solvent-based acrylic sealer designed to give concrete and stone surfaces a high-gloss, wet-look finish that enhances natural colors. It stands out for its durability, offering strong resistance to cracking, staining, and surface damage while lasting up to three times longer than some competitors thanks to its UV-stable, non-yellowing resins. This means it holds its shine and protective qualities well even under sun exposure.

The product is water resistant and breathable, which helps prevent moisture problems under the sealer. It sticks firmly to a variety of surfaces including concrete, brick, pavers, and natural stone, and does not require a primer, making the application easier for users. However, being solvent-based means it has stronger fumes than water-based sealers, so adequate ventilation is necessary during use. Also, while it delivers a very glossy finish, those looking for a more matte or natural look might find this too shiny.

It is ideal for homeowners or professionals seeking a long-lasting, vibrant wet-look protection on outdoor surfaces that face sun and weather exposure. Its compatibility with Grip-Tek 250 for added slip resistance is useful for enhancing safety on slick surfaces.