10 Best Indoor Concrete Sealers 2025 in the United States

The Liquid Rubber Concrete Foundation and Basement Sealant is a versatile option for various sealing needs, including foundations, basements, and more. Its high flexibility and durability are standout features, as the sealant membrane can stretch significantly without cracking, making it reliable for long-term use. This sealant is easy to apply with a brush, roller, or paint sprayer, and does not require mixing, which simplifies the application process.

The water-based formula is environmentally friendly, containing no VOCs or harmful odors, making it safe for indoor and outdoor use without special breathing apparatus. However, one drawback is that the product remains tacky, which means it's not suitable for surfaces that will be walked on. This limitation could be a concern for those needing a sealer for floors or other walking surfaces.

It is also important to note that the product only accepts full kit returns, which may be inconvenient if not all of the product is used. This sealer is ideal for users needing a flexible, durable, and environmentally friendly option for non-walking surfaces.

The Armor AR350 Low Gloss Wet Look Concrete Sealer is a strong contender in the realm of indoor concrete sealers, particularly for those looking to enhance and protect exterior concrete surfaces. It’s a solvent-based acrylic sealer designed to provide a low gloss finish with dramatic color enhancement, making your concrete and pavers appear richer and more vibrant. This is especially appealing for individuals who appreciate the look of wet concrete, as this product aims to replicate that effect. With its professional-grade formulation, it offers long-lasting protection against a variety of elements such as UV rays, moisture, and heavy traffic, which is a significant advantage for both residential and commercial applications.

Application-wise, the sealer is easy to use and can be applied using a roller or sprayer, which is great for DIY enthusiasts or professionals alike. One gallon covers a reasonable area of 175-225 square feet, making it efficient for larger projects. Also, its self-priming nature simplifies maintenance; reapplication is straightforward if needed.

However, there are a few drawbacks to consider. The high VOC content of 700 may be a concern for those sensitive to fumes or living in areas with strict environmental regulations, as it may not be permissible for indoor use in certain regions. Additionally, while the sealer is versatile, it's specifically formulated for exterior surfaces, which limits its application if you’re looking for something to use indoors. Lastly, being a solvent-based product, it may require more careful handling and adherence to safety protocols during application.

The Armor SX5000 WB is a water-based concrete sealer that stands out for its professional-grade silane siloxane formulation, making it a suitable choice for both indoor and outdoor surfaces. It effectively protects various materials, including concrete, brick, and natural stone, and is designed to reduce water absorption by up to 95%. This reduction helps prevent issues like cracking and staining, which can be a significant concern for homeowners looking to maintain the integrity and appearance of their surfaces.

One of the key strengths of this product is its natural-look finish; it won't alter the color or texture of the surfaces it protects. Users will appreciate that it’s easy to apply with a pump sprayer, and the coverage of approximately 175-225 square feet per gallon makes it a practical option for larger areas. The sealer is also touted for its longevity, providing protection for 7-10 years, which is a considerable time frame before needing reapplication.

On the downside, while the product is marketed as ready to use, preparation of the surface is crucial for optimal performance. Users must ensure that the area is properly cleaned and prepped, which may require additional effort. Additionally, although being water-based and having a low VOC content is advantageous for indoor application, some may prefer a quicker-drying option, as drying times can vary based on environmental conditions.