10 Best Basement Wall Sealer of December 2025

• PROTECTIVE FINISH FOR - Foundations, ICF's, Basements, Shower Liners, Deck and Fence Posts, Planter Boxes, Metal, Wood, Concrete and more
• HIGHLY FLEXIBLE - Sealant final membrane has over 900% elongation in the sealing material preventing adhesion failure causing cracks and taring. Flat/Ponding Surface: 50 sq ft/G per coat
• EASY TO APPLY - No mixing required! Apply by brush, roller or high quality piston paint sprayer. Container can be closed and left over material used later. No pot life or working time like 2 component products
• ENVIRONMENTALLY FRIENDLY - Liquid Rubber Foundation Sealant is water based, containing no solvents, VOC's or harmful odors. Safe for humans and pets alike, can be used indoors and outdoors with no special breathing apparatus
• FOR A BULLETPROOF SYSTEM - Bridge joints, seams, vents, gaps, protrusions…. With Liquid Rubber Seam Tape or Liquid Rubber Geo-Textile where possible movement may occur

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• Use a CONCRETE SEALER designed for Commercial applications to keep a clean, NATURAL APPEARANCE and improve the DURABILITY of YOUR concrete driveway, patio pavers, unglazed cement tiles, concrete block retaining wall, cast concrete or your garage floor.
• PROTECTS AGAINST mold, mildew, concrete spalling, freeze thaw, pitting, salt damage after sealing with AQUA-X 11 Concrete Sealer
• BREATHE EASY when applying AQUA-X 11 Concrete Sealer due to NO FOUL ODOR and LOW VOCs as so many reviews have noted
• Your money goes farther with AQUA-X 11 Concrete Sealer with TWICE THE COVERAGE RATE - up to 600 square feet per gallon, and up to 5 years before resealing
• EASY ONE COAT SPRAY ON APPLICATION using our included Application Guide and available Application Videos

AQUA-X

• Flex Seal Liquid is liquid rubber in a can! Now you can brush, roll, dip or pour it on!
• Use anywhere you need a watertight, flexible rubberized coating
• Goes on smooth and covers fast, sealing out water, air and moisture
• Non-hazardous, non-toxic, non-flammable, UV-resistant. Even safe for plants and animals
• Prevents rust and corrosion. Mildew and chemical resistant

Flex Seal Liquid

• Stops Water Leaks Through Concrete Foundation Cracks
• Fast Curing Surface Sealer and Injection Polyurethane Foam
• How-To Video Included
• Same materials our Pro Customers Use
• Poxy Paste Tightly Bonds to the Concrete for a Better Injection Process

Applied Technologies

• Penetrates Concrete (up to 4") – Internally Seals the Matrix of Concrete, Blocking the Pores and Capillaries to Prevent Water Seepage, Water Vapor, and Radon Gas. Ideal for use on basement floors, interior basement walls, foundation walls, slab-on-grade, indoor and outdoor poured concrete slabs and walls.
• Hardens & Strengthens Concrete – Helps to Protect Against and Reduce Concrete Dusting, Efflorescence, Damage Caused by Salts, De-Icing Chemicals, and Freeze Thaw. Does Not Trap Moisture.
• ECO-Friendly & Easy to Apply Formula – ZERO VOCs, No Odors, No Solvents, Non-Toxic, Non-Flammable. Water-based.
• Permanent & Paintable – No Reapplication Needed. Resistant to Hydrostatic Water Pressure. Does Not Form a Surface Film. No Peeling or Fading. Leaves Surface Paintable. Great Primer for Epoxies, Tiles, and Overlay Flooring.
• Commercial-Grade Backed by a Money-Back Guarantee - Trusted Since 1997

RadonSeal

• This premium, interior/exterior paint is formulated to waterproof and seal porous concrete and masonry surfaces both inside and outside your home.
• Using nanotechnology, this paint forms a barrier to help stop water infiltration while an alkali resistant coating provides a long-lasting, durable and decorative finish.
• Apply this paint on properly prepped and cured above and below grade basement walls, masonry walls, retaining walls, cinder and concrete blocks, stucco and brick. Do not use on floors or on walls with active water leaks.
• Prime all uncoated, patched, chalky, and adjacent wood and/or metal surfaces with KILZ Premium Primer. For below grade application, fill all holes/cracks with hydraulic cement prior to painting.
• This is a 1-gallon can of Interior/Exterior Basement and Masonry Waterproofing Paint, White, 1-gallon in white. Depending on surface porosity, 1 gallon covers 75 to 125 square feet per.
• A minimum of two coats of this product are required for optimal results. Paint dries to touch in one hour and can be re-coated in 4 hours depending on humidity.
• Apply using a high quality 1/2"-3/4" nap roller, 4" nylon/polyester brush or an airless sprayer capable of delivering 2200-3200 PSI or greater using a .023"-.025" spray tip.
• KILZ has been making premium primers and paints for 40 years. KILZ was named Paint Brand of the Year in 2015 in the Harris Poll EquiTrend  Rankings.

Kilz

• GUARANTEED to stop water - withstands 10 pounds of hydrostatic pressure (PSI), equivalent to a wall of water 22 feet high
• Fully transferable 10 Year Warranty
• Helps protect against radon gas penetration by reducing vapor transfer
• Low-odor formula complies with all current VOC requirements
• Breathable film will not trap moisture in the masonry
• No pre-mixing or pre-wetting necessary
• Withstands 10 pounds of hydrostatic pressure, greater than a wall of water 22 feet high
• A breathable film - does not trap moisture in masonry. Applies easily with brush and/or roller and cleans up with soap and water
• Complies with all current VOC and/or VOS
• 10-year warranty. Tintable

Drylok

• NO DRILLING REQUIRED – The low-pressure injection method eliminates the need for drilling.
• HAIRLINE CRACKS – Low-viscosity, 2-component, injection urethane is suitable for the repair of hairline cracks.
• NO NEED TO EXCAVATE – Save serious money by repairing the crack from the inside.
• NO SPECIAL TOOLS REQUIRED – Use a standard caulking gun to inject.
• PERMANENT - Prevents water seepage permanently! Imperious to water vapor, soil gases, and even radon.

RadonSeal

• Solar Reflectance Up to 98%
• Solvent: Water
• Permeability: .016 perm rating with 10 mils/min. of coating
• Elongation: Up to 700%
• Strength: 250 PSI

AMES

• PROTECTIVE FINISH FOR - Flat roofs, metal roofs, sloped roofs, planter boxes, foundations, ponds, sheds, basements, metal, wood, concrete and more
• HIGHLY FLEXIBLE & DURABLE - Final membrane has over 1000% elongation preventing adhesion failure, and is UV Stable stopping the sun from degrading the product
• COVERAGE - Vertical Surfaces - 1 gallon/30 sq ft (2.8 sq m). 3-4 heavy coats to achieve a 30 mil (0.76 mm) membrane. Flat/Ponding Surfaces - 1 gallon/15 sq ft (1.4 sq m). 4-5 heavy coats to achieve a 60-80 mil (1.5-2 mm) membrane
• ENVIRONMENTALLY FRIENDLY - Liquid Rubber Waterproof Sealant/Coating is water based, containing no solvents, VOC's or harmful odors. Safe for humans and pets alike, can be used indoors and outdoors with no special breathing apparatus
• FOR A BULLETPROOF SYSTEM - Bridge joints, seams, vents, gaps, protrusions…. With Liquid Rubber Seam Tape or Liquid Rubber Geo-Textile where possible movement may occur

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