9 Best Waterproof Basement Paint 2025 in the United States

The Liquid Rubber Concrete Foundation and Basement Sealant is a highly versatile waterproofing product suitable for both indoor and outdoor use. It offers strong waterproofing ability with a highly flexible membrane that can stretch over 900%, preventing cracks and tears. Its easy application process is a significant advantage, as it requires no mixing and can be applied with a brush, roller, or sprayer.

The product is also environmentally friendly, water-based, and free from harmful solvents and odors, making it safe for use around humans and pets. Whether you are sealing foundations, basements, or other structures, this sealant provides a protective finish and can be used with additional Liquid Rubber products for enhanced durability in areas with potential movement or gaps.

However, it's important to note that the product comes in black, which might not be the preferred color for all users. Additionally, while the product is marketed as easy to apply, users without prior experience in applying sealants may still find the process somewhat challenging. The coverage may vary depending on the surface type and condition, so it is advisable to calculate the required amount carefully. This product is ideal for homeowners and DIY enthusiasts looking for an effective and safe waterproofing solution for their concrete or wooden structures.

The KILZ Basement and Masonry Waterproofing Paint is a versatile solution designed to protect and seal porous masonry and concrete surfaces both indoors and outdoors. It excels in waterproofing ability, utilizing nanotechnology to create a strong barrier against water infiltration. Its mold and mildew resistance is another strong point, ideal for damp basement environments. Durability is enhanced by its alkali-resistant coating, ensuring a long-lasting and decorative finish.

Proper surface preparation, including patching holes and cracks with hydraulic cement, is essential for the best results. Applying this paint is relatively straightforward, though it requires at least two coats and may demand additional tools like a high-quality roller, brush, or an airless sprayer. The 1-gallon can cover between 75 to 125 square feet depending on surface porosity, which might be limiting for larger projects.

The flat/matte finish provides a clean, unreflective look, though some users might prefer a glossier option. While it dries quickly to the touch in one hour, full re-coat time can be up to four hours, influenced by humidity levels. This product is best suited for homeowners looking to waterproof and enhance their basement or masonry structures with a reliable, long-lasting paint that is resistant to mold and mildew.

The KILZ Self-Priming Masonry, Stucco, and Brick Paint is a versatile option for both interior and exterior surfaces, including masonry, brick, stucco, and drywall. One of its standout features is its excellent water repellency, making it a strong candidate for waterproofing needs. Additionally, it offers good mold and mildew resistance, which is crucial for basement environments prone to dampness and mold growth.

The paint is also alkali-resistant, which enhances its durability on various surfaces up to a pH of 12.0. Users will appreciate its ease of application, with options to roll, brush, or spray it on, and its easy cleanup with soap and water. The fast-drying formula and wide coverage (250-400 sq. ft. per gallon) make it a practical choice for larger areas.

While its flat finish is great for hiding imperfections, it may not be ideal for those looking for a shiny or glossy appearance. Some users might find the gray color limiting if they have specific color preferences. Additionally, despite its good coverage, highly textured surfaces might require more paint than smoother ones. This product is particularly suitable for homeowners looking to waterproof and protect their basement walls while keeping maintenance simple.