Choosing the right concrete waterproofing paint can protect foundations, walls, and masonry from moisture intrusion. This guide highlights five top-rated options, covering interior and exterior applications, durability, and application considerations. Each product below includes a direct Amazon link, a quick image reference, and the standout features you should know about before painting. Use this overview to compare performance, coverage, and compatibility with below-grade and above-grade surfaces.
| Product | Brand | Notable Features |
|---|---|---|
| KILZ Basement And Masonry Waterproofing Paint | KILZ | Waterproofs porous concrete and masonry; interior/exterior; alkali resistant |
| Hensire Exterior Wall Paint | Generic | Waterproof, low odor, available in multiple colors; suitable for brick/concrete |
| Ames BMX1WRG 1 Gallon Blue Max White | AMES | Elastomeric waterproofer; 900% elongation; ideal for below-grade and foundations |
| Liquid Rubber Basement And Foundation Repair Sealant | Liquid Rubber | Flexible, 900% elongation; seals active leaks; compatible with various substrates |
| 1 gal Zinsser White WaterTite-LX | Zinsser | Mold & mildew-proof; stops water pressure; smooth white finish |
Note: Each product above targets concrete, masonry, or brick surfaces with moisture resistance in mind. This selection emphasizes a mix of traditional paints, elastomeric coatings, and sealants to address different moisture scenarios—from light dampness to active leaks—while staying applicable to interior and exterior projects.
KILZ Basement and Masonry Waterproofing Paint
This premium interior/exterior coating is formulated to waterproof and seal porous concrete and masonry surfaces. It uses nanotechnology to form a moisture-blocking barrier, and its alkali-resistant coating provides a durable, decorative finish. Suitable for above- and below-grade basement walls, masonry, retaining walls, cinder blocks, stucco, and brick. Do not use on floors or on walls with active water leaks. Application options include a 1/2″–3/4″ nap roller, 4″ nylon/polyester brush, or an airless sprayer delivering 2200–3200 PSI with a .023″–.025″ tip.
Hensire Exterior Wall Paint – Waterproof
Designed for exterior use on concrete and brick, this waterproof water-based paint offers strong adhesion and moisture resistance. It provides durable finishes across black, grey, and white options, helping conceal imperfections while resisting sun and rain fade. The formula adheres well to rough brick textures for long-lasting color and a sturdy layer that protects against moisture damage without significant odors.
AMES BMX1WRG 1 Gallon Blue Max White
Ames Blue Max White is a high-adhesion elastomeric liquid rubber waterproofer with 900% elongation, designed to resist cracking and peeling. It’s suitable for below-grade and insulated foundations, basements, and underlayment, and can be applied to concrete, wood, metal, and more. The product forms an elastic membrane that expands and contracts with the substrate, maintaining a flexible waterproof barrier across temperatures.
Liquid Rubber Basement and Foundation Repair Sealant
This flexible coating creates a permanent waterproof membrane for basement waterproofing and foundation leak repair. It supports active leaks and moisture control, and is compatible with self-leveling concrete applications. The formula provides 900% elongation, enabling movement without cracking. It also serves as a crack filler and adheres to concrete, masonry, wood, metal, and foundation surfaces, making it a versatile option for DIY projects.
1 gal Zinsser WaterTite-LX
WaterTite-LX is a latex-based waterproofing paint designed to curb mold and mildew on interior surfaces while preventing water intrusion. It’s formulated to stop water pressure and provides a smooth, bright white finish that applies easily to dry walls with a brush or roller. This product is a reliable option for damp basements and interior masonry surfaces requiring a breathable, washable coating.
Buying Guide: Key Considerations For Concrete Waterproofing Paint
- Surface type and condition: Determine whether you’re coating interior walls, exterior facades, basements, or below-grade foundations. Porous surfaces, efflorescence, or active leaks require different formulations (paint, elastomeric coatings, or sealants).
- Moisture level and leaks: Use sealants or elastomeric coatings for active leaks, while water-repellent paints may suffice for damp-but-not-leaking surfaces. For severe moisture, consider multiple layers or a combined system with drainage and waterproofing membranes.
- Flexibility and elongation: Elastomeric coatings with high elongation tolerate substrate movement and temperature changes, reducing cracking risk.
- Ventilation and odor: Water-based formulas generally offer lower odor and easier cleanup, suitable for occupied spaces. For exterior projects, odor is less of a constraint.
- Durability and UV resistance: Exterior surfaces require UV-stable finishes to resist sun exposure. Interior coatings should resist staining from detergents and oils.
- Application method: Consider roller, brush, or spray compatibility. Some coatings require specific nap rollers or spray equipment and PSI ranges for even coverage.
- Compatibility and overcoating: Check whether the coating can be applied over existing paint, concrete sealers, or masonry coatings, and whether priming is required.
- Maintenance and cleaning: Some coatings offer washable finishes; others may require periodic inspection and touch-ups around joints and cracks.
- Warranty and manufacturer guidance: Review product warranties, cure times, and recoating windows to ensure long-term performance.
Selecting the right concrete waterproofing paint involves balancing surface conditions, moisture challenges, and desired aesthetics. For ongoing dampness or active leaks, a combination approach—elastomeric coatings with a dedicated sealant or membrane—often yields the most durable results. Always follow surface preparation steps and safety recommendations provided by the manufacturer to maximize performance and longevity.