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10 Best Brick Water Sealer 2025 in the United States

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Our Top Picks

#1

Winner

Armor SX5000 WB Natural-Look Penetrating Water-Based Silane Siloxane Concrete Sealer for Concrete, Brick, Pavers, and Natural Stone - 5 Gallon

The Armor SX5000 WB is a high-quality, water-based sealer designed for protecting a range of surfaces such as concrete, brick, and natural stone. One of its standout features is its ability to significantly reduce water absorption by up to 95%, which helps prevent damage from cracks and stains over time. The professional-grade Silane-Siloxane formula is particularly beneficial for both interior and exterior applications, providing a durable barrier that lasts between 7 to 10 years. Furthermore, it maintains the original look and feel of the surfaces it protects, which is a major plus for homeowners looking to preserve their aesthetics.

Ease of application is another strength; it's ready to use, allowing for straightforward application with a pump sprayer, and clean-up is hassle-free thanks to its water-based formula with zero VOCs and no odor. This makes it suitable for DIY enthusiasts who may not have a lot of experience with sealers.

There are a few considerations to keep in mind. While it provides solid protection, the initial preparation of the surfaces is crucial for the best results, requiring proper cleaning to ensure effectiveness. Additionally, while the 5-gallon size is great for larger projects, it may be more than what some users need, which could lead to waste if they only have a small area to treat.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Type of Sealer
The product is not just a surface sealant but penetrates deep, using chemicals similar to those used by federal DOT on highways.
Durability
It performs well in heavily wooded areas, allowing debris to wash off easily and water to run off effectively.
Ease of Application
Application is straightforward and easy, with clear directions ensuring a waterproof finish.
Finish
The Armor SX5000 WB makes old driveways look new again after proper power washing and application.
#2

MasonryDefender Chimney Brick Sealer, Clear Water-Based Siloxane Sealer - Breathable Waterproofer for All Exterior, Vertical Masonry Surfaces - 1 Gal

The MasonryDefender Chimney Brick Sealer is a water-based siloxane sealer designed for exterior vertical masonry surfaces, including chimneys, brick walls, stone, and stucco. One of its standout features is its breathability, which allows moisture to escape, preventing freeze/thaw damage, a significant benefit for long-term durability. The sealer forms a permanent bond with the masonry, offering durable protection against water intrusion, which is particularly crucial for preventing leaks that can cause damage to your home.

Additionally, the sealer does not alter the surface color, maintaining the aesthetic appeal of your masonry surfaces. The application process is straightforward, requiring two coats applied with a pump-up sprayer, and the water-based formula makes cleanup easy. However, you should be cautious about overspray and use drop cloths to protect surrounding areas.

The coverage is relatively standard, with one gallon covering 80-150 square feet in two coats, and it dries to the touch in 2-6 hours, becoming waterproof within 4-6 hours. While it continues to strengthen over several weeks, some users may find the initial drying time slightly longer than preferred. This sealer is best suited for homeowners looking for a reliable, easy-to-apply solution to protect their chimneys and other vertical masonry surfaces from water damage without altering their appearance.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Durability
After a year of use, the sealer continues to effectively repel water, highlighting its durability and long-lasting protection.
Ease of Application
For best results, ensure the brick is pressure washed and any holes are filled before applying the sealer.
#3

KILZ Basement and Masonry Waterproofing Paint, Interior/Exterior, White, 1 Gallon

The KILZ Basement and Masonry Waterproofing Paint is a versatile option suited for both interior and exterior applications on porous surfaces like concrete, masonry, stucco, and brick. As a water-based sealer, its formulation aims to create a waterproof barrier, enhanced by alkali resistance for long-lasting durability. This paint is beneficial for preventing water infiltration and is mildew-resistant, which adds another layer of protection to your surfaces.

It's not suitable for floors or walls with active water leaks. The required preparation includes priming and filling cracks, which might be a bit involved but ensures better results. Application is suggested using various tools like rollers, brushes, or airless sprayers and the paint dries to the touch in about an hour, with a full recoat possible in four hours. A matte finish provides a subtle look rather than a shiny surface.

The coverage area varies between 75 to 125 square feet per gallon, depending on the porosity of the surface. This product is best for homeowners aiming to protect and seal basement or masonry surfaces with a durable, water-resistant coat that also resists mildew.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Ease of Application
The paint applies easily and offers excellent coverage.

Buying Guide for the Best Brick Water Sealer

Choosing the right brick water sealer is crucial to protect your brick surfaces from water damage, mold, and mildew. A good sealer will extend the life of your bricks, maintain their appearance, and prevent costly repairs. When selecting a brick water sealer, consider the type of sealer, its durability, ease of application, and the specific needs of your project. Here are some key specifications to help you make an informed decision.
Type of SealerBrick water sealers come in two main types: penetrating sealers and film-forming sealers. Penetrating sealers soak into the brick and provide protection from within, making them ideal for preserving the natural look of the brick. Film-forming sealers create a protective layer on the surface, which can enhance the color and provide a glossy finish. Choose a penetrating sealer if you want to maintain the brick's natural appearance and a film-forming sealer if you prefer a more polished look.
DurabilityDurability refers to how long the sealer will last and how well it will protect the brick over time. High-quality sealers can last several years before needing reapplication. Consider the climate and exposure conditions of your brick surfaces. For areas with harsh weather conditions or high foot traffic, opt for a sealer with a longer lifespan and higher durability. For less exposed areas, a standard durability sealer may suffice.
Ease of ApplicationEase of application is important, especially if you plan to apply the sealer yourself. Some sealers require multiple coats and specific application tools, while others can be applied with a simple brush or sprayer. If you are a DIY enthusiast, look for a sealer that is user-friendly and comes with clear instructions. For professional applications, more complex products may be suitable as they often offer superior protection.
BreathabilityBreathability refers to the sealer's ability to allow moisture to escape from the brick while preventing water from entering. This is important to prevent trapped moisture, which can lead to mold and mildew growth. Penetrating sealers generally offer better breathability compared to film-forming sealers. If your bricks are in a damp or humid environment, prioritize a sealer with high breathability to ensure the longevity and health of your brick surfaces.
UV ResistanceUV resistance is the sealer's ability to withstand damage from ultraviolet rays. Prolonged exposure to sunlight can cause some sealers to degrade, reducing their effectiveness. If your brick surfaces are exposed to a lot of sunlight, choose a sealer with high UV resistance to ensure long-lasting protection. This is particularly important for outdoor brick surfaces like patios, walkways, and facades.
FinishThe finish of the sealer can affect the appearance of your brick surfaces. Sealers can provide a range of finishes from matte to glossy. A matte finish will preserve the natural look of the brick, while a glossy finish can enhance the color and provide a shiny appearance. Consider the aesthetic you want to achieve and choose a sealer that offers the desired finish. For historical or traditional buildings, a matte finish may be more appropriate, while modern designs might benefit from a glossy finish.

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