Top 10 Cinder Block Sealer – Interior & Exterior House Paint

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1. L R


Black, Waterproof Coating, Indoor & Outdoor Use, 5 Gallon, Liquid Rubber Foundation and Basement Sealant, Easy to Apply

L R #ad - With liquid rubber seam Tape or Liquid Rubber Geo-Textile where possible movement may occur. 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. Environmentally friendly - liquid rubber foundation Sealant is water based, VOC's or harmful odors. Protective finish for - foundations, shower Liners, Planter Boxes, Metal, ICF's, basements, Deck and Fence Posts, Wood, Concrete and more. Flat/ponding surface: 50 sq ft/G per coat. Safe for humans and pets alike, containing no solvents, can be used indoors and outdoors with no special breathing apparatus.

Highly flexible - sealant final membrane has over 900% elongation in the sealing material preventing adhesion failure causing cracks and taring. No pot life or working time like 2 component products. For a bulletproof system - bridge joints, gaps, vents, seams, protrusions….
BrandL R #ad
ManufacturerLiquid Rubber USA #ad
Height16 Inches
Length12 Inches
Width12 Inches
Part Number20602

2. Rain Guard


10 Yr Warranty, Rainguard Micro-Seal 1 Gal Clear Penetrating Silane Siloxane Professional Grade Water Repellent Sealer – Water Based Concrete Sealer

Rain Guard #ad - Water based concrete sealer: restore, protect and extend the life of any masonry horizontal or vertical surface with a high-performance hydrophobic coating.

The clear waterproof spray is to be used as a primer before painting to prohibit moisture transfer in the substrate and to protect from stains such as oil, gas and anti-freeze. Rainguard water repellent sealer protects your investment with a 10-year satisfaction and can be used anywhere in the country. Water repellent: 100% penetrating coating provides excellent resistance to water, salt spray, ice removal agents and wind driven rain. It does not leave a surface film. Made using no-sheen and non-yellowing formula. Clear spray sealant: the concrete sealer does not alter surface appearance.
BrandRain Guard #ad
ManufacturerRainguard International #ad
Height11.5 Inches
Length7 Inches
Weight0 Pounds
Width4.75 Inches
Part NumberCR-0356

3. RadonSeal


Basement Waterproofing & Radon Mitigation in One | Seals Concrete Against Water, and Radon Gas 5-Gallon, RadonSeal Plus Deep-Penetrating Concrete Sealer, Vapor

RadonSeal #ad - No peeling or Fading. Penetrates concrete up to 4" – internally seals the matrix of concrete, Water Vapor, foundation walls, slab-on-grade, interior basement walls, Blocking the Pores and Capillaries to Prevent Water Seepage, and Radon Gas.

Eco-friendly & easy to apply formula – zero vocs, No Solvents, Non-Toxic, No Odors, Non-Flammable. Permanent & paintable – no reapplication needed. Ideal for use on basement floors, indoor and outdoor poured concrete slabs and walls. Great primer for Epoxies, Tiles, and Overlay Flooring. Resistant to hydrostatic Water Pressure.

Does not Trap Moisture. Hardens & strengthens concrete – helps to protect against and Reduce Concrete Dusting, De-Icing Chemicals, Efflorescence, Damage Caused by Salts, and Freeze Thaw. Water-based. Leaves Surface Paintable. Commercial-grade backed by a Money-Back Guarantee - Trusted Since 1997. Does not form a Surface Film.
BrandRadonSeal #ad
ManufacturerNovion #ad
Part Number110

4. Drylok


5-Gallon Pail, Drylok 275 Masonry Waterproofer Water-Based White

Drylok #ad - Low-odor formula complies with all current VOC requirements. 10-year warranty. Tintable. Guaranteed to stop water - withstands 10 pounds of hydrostatic pressure PSI, equivalent to a wall of water 22 feet high.

Complies with all current VOC and/or VOS. Breathable film will not trap moisture in the masonry. No pre-mixing or pre-wetting necessary. Applies easily with brush and/or roller and cleans up with soap and water. Helps protect against radon gas penetration by reducing vapor transfer. Fully transferable 10 Year Warranty. A breathable film - does not trap moisture in masonry. Withstands 10 pounds of hydrostatic pressure, greater than a wall of water 22 feet high.
BrandDrylok #ad
ManufacturerUnited Gilsonite Laboratories #ad
Height15 Inches
Length12 Inches
Weight66 Pounds
Width12 Inches
Part Number275

5. Ghostshield


1 Gallon Penetrating Concrete Sealer, Water and Salt Repellent, Siloxa-Tek 8500 Ready to Use

Ghostshield #ad - Use on driveways, garages, basements, patios, pool decks. Covers up to 250 sqaure feet per gallon per coat. An industrial-grade, silane/siloxane engineered to reduce water and moisture intrusion, water-based, while protecting concrete or masonry substrates from chlorides and deicing salts.

Resists deicing salt/chloride damage, cracking, pitting, freeze thaw damage, spalling, mildew, mold, efflorescence. Excellent water beading effect, roller or brush, excellent penetration, no appearance change - dries clear, easy application with sprayer, Low VOCs. Reduces water ingress, moisture intrusion and ASR.
BrandGhostshield #ad
ManufacturerKretetek Industries, Inc. #ad
Part Number85001

6. Kilz


Gray, KILZ Interior/Exterior Self-Priming Masonry, Stucco and Brick Flat Paint, 1 gallon

Kilz #ad - Kilz has been making premium primers and paints for 40 years. This formula is designed to accentuate all textured surfaces while achieving a natural look. This is a 1-gallon can of kilz interior/exterior concrete, brick, and tile paint in Gray with a flat finish.

This paint can be rolled, brushed, or sprayed on. Kilz has been making premium primers and paints for 40 years. All surfaces must be clean, oil, loose and peeling paint, free of dust, mold and mildew stains, chalk, rust, grease, wax, polish, and all other foreign substances. This high-quality, acrylic latex water-base interior/exterior paint offers excellent hiding properties with great adhesion and water repellency on textured interior and exterior surfaces.

Kilz was named paint brand of the Year in 2015 in the Harris Poll EquiTrend Rankings. Covers 250-400 square feet per gallon depending on surface texture. This self-priming paint offers a mildew resistant finish on properly prepared smooth, drywall, Rough and textured masonry, stucco, and brick surfaces. It is alkali-resistant up to ph 12. 0, easy to apply, and cleans up with soap and water.
BrandKilz #ad
ManufacturerKILZ #ad
Height7.65 Inches
Length6.63 Inches
Weight11.4 Pounds
Width6.63 Inches
Part NumberL341711
WarrantyLimited Warranty (see product package for details)

7. RadonSeal


RadonSeal Plus Deep-Penetrating Concrete Sealer 2.5-Gallon, Basement Waterproofing & Radon Mitigation Sealer | Seals Concrete Against Water, Vapor, and Radon Gas

RadonSeal #ad - Hardens & strengthens concrete – helps to protect and reduce Concrete Dusting, Crazing, Damage Caused by Salts, De-Icing Chemicals, and Freeze Thaw. Ideal for use on basement floors, slab-on-grade, foundation walls, indoor and outdoor poured concrete slabs and walls.

Water-based. Eco-friendly & easy to apply formula – zero vocs, Non-Toxic, No Solvents, no fumes or Noxious Odors, Non-Flammable. Leaves surface Paintable. Breathable, does not trap moisture! Commercial-grade backed by a Money-Back Guarantee - Trusted Concrete Sealer Since 1997. Penetrating sealer that does not form a surface film; no peeling or fading.

Permanent & paintable – no reapplication needed; the seal becomes integral to the concrete itself. Penetrates concrete up to 4" – internally seals the matrix of concrete, blocking the micro-pores and capillaries to prevent capillary water seepage, interior basement walls, efflorescence, water vapor, and radon gas directly through concrete. Resistant to Hydrostatic Water Pressure.
BrandRadonSeal #ad
ManufacturerNovion #ad
Part Number111

8. Zinsser


Zinsser 2301 Problem Surface Sealer, 1 Gallon, Clear

Zinsser #ad - Seals old wallpaper adhesive. Unique coating seals adhesive residue and protects drywall from tearing, blistering and more. Easy to apply, high spread rate, fast drying.

Covers up to 450 sq ft and dries to the touch within an hour. Seals skim coats & spackling. Creates a clear, hard, flat finish ready for topcoat. Use on porous areas such as ceilings, interior walls and related surfaces prior to texturing, wallcovering or painting. Water-based, low odor formula applies with a milky-blue/white tint for proper coverage and dries clear. Repairs torn paper on damaged drywall, eliminates bubbles. Protects new drywall.
BrandZinsser #ad
ManufacturerRust-Oleum Corporation #ad
Height7.65 Inches
Length6.75 Inches
Weight9.02 Pounds
Width6.75 Inches
Part Number2301

9. Drylok


Drylok 28613 Extreme Latex Masonry Waterproofer Interior/Exterior Smooth Finish, White

Drylok #ad - Green Wise Certified. Low-odor formula complies with all current VOC requirements. Guaranteed to stop water – withstands 15 pounds of hydrostatic pressure PSI, equivalent to a wall of water 33 feet high. Helps protect against radon gas penetration by reducing vapor transfer. Fully transferable 15 Year Warranty.
BrandDrylok #ad
ManufacturerJensen (Home Improvement) #ad
Height7.8 Inches
Length6.8 Inches
Weight11 Pounds
Width7.3 Inches
Part Number28613

10. AMES


Ames Blue Max Liquid Rubber

AMES #ad - Impervious to water when applied in a uniform & seamless fashion with adequate mileage. Ft. Blue max 1 gallon pail. Highly adhesive with 800% elongation and blue in color. Per coat. Coverage: 1 gallon per 100 sq. High strength elastomeric liquid rubber for waterproofing basements interior and exterior.
BrandAMES #ad
ManufacturerAmes Research Laboratories Inc. #ad
Height7.75 Inches
Length6.75 Inches
Weight9.5 Pounds
Width6.75 Inches
Part NumberBMX1RG