Choosing the right waterproofing paint for concrete walls can protect foundations, basements, and exterior masonry from moisture intrusion. The following selections emphasize durable waterproof barriers, elasticity to resist cracking, and compatibility with below-grade and above-grade surfaces. Each option is suitable for interior or exterior use on concrete, brick, stucco, and other masonry substrates.
| Product | Brand | Surface | Notes |
|---|---|---|---|
| KILZ Basement and Masonry Waterproofing Paint | KILZ | Concrete, masonry walls | Nanotechnology barrier; alkali resistant |
| Zinsser WaterTite LX Ultra Waterproofing Paint | Zinsser | Basements, walls, fountains, planters | Two guarantees; high coverage |
| AMES Blue Max White Waterproofing | AMES | Basements, foundations | 900% elongation; elastic membrane |
| Zinsser WaterTite Professional | Zinsser | Concrete, stucco, masonry | Lifetime waterproof guarantee |
| Hensire Exterior Wall Paint | Generic | Concrete & brick exteriors | Low odor; no primer required |
The selections above emphasize products designed to seal porous concrete and masonry, reducing water infiltration while offering durable finishes. They are suitable for varied climates and project sizes, from small DIY repairs to larger exterior applications.
KILZ Basement and Masonry Waterproofing Paint
This premium interior/exterior paint is formulated to waterproof and seal porous concrete and masonry surfaces both inside and outside the home. Using nanotechnology, it forms a barrier to help stop water infiltration, and its alkali resistant coating provides a long-lasting, decorative finish. It is suitable for properly prepped above and below grade basement walls, masonry walls, retaining walls, cinder blocks, stucco, and brick. Do not use on floors or on walls with active water leaks. Apply with a high-quality roller, brush, or airless sprayer with the specified tip range.
Zinsser 270267 WaterTite LX Ultra Waterproofing Paint
Great for basements and other interior/exterior masonry surfaces like fountains, reflecting pools, planters, retaining walls, privacy fences, and more, WaterTite LX Ultra offers excellent waterproofing benefits. It is backed by two guarantees and covers up to approximately 375 square feet per gallon. It provides a durable shell against moisture while maintaining a finish suitable for long-term wear.
AMES BMX1WRG 1 Gallon Blue Max White
AMES Blue Max White is a strong elastomeric liquid rubber waterproofer with 900% elongation, designed to resist cracking and peeling. It is suitable for waterproofing below-grade foundations, basements, and underlayment. It adheres to concrete as well as wood, metal, and more, and can be brushed, rolled, or sprayed on vertical or horizontal surfaces. The product expands and contracts with the substrate, helping to prevent future water intrusion.
Zinsser WaterTite Professional Waterproofing Paint
Ideal for interior and exterior concrete, stucco, cement, cinder block and other masonry surfaces, WaterTite Professional offers a lifetime waterproof guarantee. It provides reliable moisture resistance for above or below grade installations, delivering a protective barrier on a range of masonry substrates and helping preserve structural integrity in challenging environments. Coverage varies with porosity and application.
Hensire Exterior Wall Paint
Hensire Exterior Wall Paint is a waterproof water-based paint designed for concrete and brick exteriors. It features strong adhesion to rough, porous surfaces and resists peeling in harsh weather. The formula is low odor and VOC-conscious, applying smoothly with brush or roller and drying quickly. It does not require a separate primer for many applications, making it a practical option for DIY projects.
Buying Guide
Key purchase considerations help ensure you select the right product for your project and climate:
- Surface compatibility: Confirm that the paint is intended for concrete, masonry, brick, or stucco, and check whether it is suitable for interior, exterior, or both applications.
- Waterproof performance: Look for products advertised as waterproof or water-resistant with guaranteed performance, especially for below-grade or high-moisture areas.
- Elongation and flexibility: Elastomeric or flexible coatings (with high elongation, e.g., 900%) accommodate substrate movement and minimize cracking.
- VOC and odor: For indoor use, low-VOC formulas reduce odors and improve indoor air quality during and after application.
- Application method: Consider whether the product can be rolled, brushed, or sprayed, and ensure you have appropriate equipment and tips for the chosen method.
- Coverage and porosity: Porous surfaces may require multiple coats. Check expected coverage per gallon and adjust for surface roughness.
- Durability and guarantees: Some products come with warranties or lifetime guarantees—understand terms and conditions to ensure they match your project duration.
- Maintenance and compatibility: If you plan to apply over existing coatings, verify compatibility to prevent peeling or poor adhesion.
For basements and exterior walls, prioritize products that provide a robust waterproof membrane plus good adhesion on masonry substrates. Elastomeric formulas tend to perform well on surfaces with minor movement, while coatings marketed with lifetime guarantees may deliver longer-term protection. If odor is a concern, select low-VOC options and ensure proper ventilation during application.