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 Drylok Low Gloss White Latex Waterproof Sealer is a solid choice for waterproofing basement walls. One of its key strengths is its excellent waterproofing ability, ensuring that your basement remains dry and protected from moisture. Additionally, it offers good mold and mildew resistance, which is crucial for maintaining a healthy environment in often damp basement conditions.

The low VOC (Volatile Organic Compounds) content makes it a safer option for indoor use, as it emits fewer harmful fumes. This water-based paint is relatively easy to apply, especially with the included brush, and its low gloss finish can provide a clean, polished look to your basement walls.

There are some drawbacks to consider. The coverage area is somewhat limited, ranging from 75 to 125 square feet per gallon, so you may need multiple cans for larger spaces. Also, while the gloss finish is aesthetically pleasing, it may not appeal to everyone who might prefer a matte or satin finish. Finally, the Drylok Sealer requires 24 hours for full curing, which means you’ll need to wait before using the space. Despite these minor drawbacks, it remains a reliable and effective option for waterproofing your basement with added benefits of mold resistance and ease of application.

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.