Top 5 Brick Sealer Exterior: Your Ultimate Buying Guide

Does your beautiful brick house look a little dull and worn out? Over time, bricks can soak up water, which can lead to cracks and stains. This is where a good exterior brick sealer comes in. It acts like a shield, protecting your bricks from rain, dirt, and even ice damage. But with so many different kinds of sealers out there, how do you pick the best one for your home?

Choosing the wrong brick sealer can be a real headache. You might end up with a sealer that doesn’t work well, or worse, changes the look of your brick in a way you don’t like. It’s a big decision because you want to protect your investment and keep your home looking its best for years to come. This can feel confusing and overwhelming, leaving you unsure of where to start.

In this post, we’ll break down everything you need to know about exterior brick sealers. We’ll explore what they do, the different types available, and how to choose the perfect one for your specific needs. By the end, you’ll have the knowledge to confidently protect your brick home and make it shine!

Our Top 5 Brick Sealer Exterior Recommendations at a Glance

Top 5 Brick Sealer Exterior Detailed Reviews

1. MasonryDefender Chimney Brick Sealer

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

Rating: 9.5/10

Keep your chimney and other outdoor masonry looking great and protected from water with MasonryDefender Chimney Brick Sealer. This clear, water-based sealer is designed to create a strong, lasting shield against water damage. It’s a smart choice for anyone looking to safeguard their home’s exterior.

What We Like:

  • It creates a permanent bond with masonry, offering long-lasting protection.
  • The sealer lets trapped moisture escape, preventing damage from freezing and thawing.
  • It effectively seals and waterproofs your chimney, stopping leaks that can damage your home.
  • This sealant is breathable and doesn’t change the color of your brick or stone.
  • It’s easy to apply with a sprayer and cleans up easily because it’s water-based.
  • The product is VOC compliant, meaning it’s better for the environment.
  • It dries quickly, so you can see results fast.

What Could Be Improved:

  • Coverage can vary, so be sure to calculate your needs carefully.
  • Drop cloths are recommended to prevent overspray, which adds a small step to application.

MasonryDefender Chimney Brick Sealer is a reliable way to protect your home’s vertical masonry surfaces. It offers great performance and peace of mind against water damage.

2. MasonryDefender Interior/Exterior Brick Sealer

MasonryDefender Interior/Exterior Brick Sealer, Satin Sheen - Clear Water Based Acrylic Sealer - Reduces Brick Dust & Makes Interior & Exterior Brick Walls Easy to Clean - 1 Gallon

Rating: 9.2/10

Tired of dusty, hard-to-clean brick walls? The MasonryDefender Interior/Exterior Brick Sealer in Satin Sheen is your solution. This clear, water-based acrylic sealer is designed to protect and enhance both your indoor and outdoor brick surfaces. It’s a great way to keep your home looking its best and make maintenance a breeze.

What We Like:

  • It works great on both inside and outside brick walls.
  • It makes your brick look natural but with a nice, subtle shine.
  • It repels water, which helps stop cracks and peeling.
  • Cleaning your brick walls becomes much easier because dirt doesn’t stick as much.
  • It significantly cuts down on brick dust inside your home, so your floors stay cleaner.
  • It has a low odor, making it pleasant to use.
  • You can adjust the shine by applying more coats.

What Could Be Improved:

  • The coverage area (80-150 sq. ft. per gallon) might mean you need more than one gallon for larger projects.
  • While it makes cleaning easier, it doesn’t eliminate the need for cleaning altogether.

Overall, the MasonryDefender Brick Sealer is a smart choice for anyone wanting to protect and beautify their brickwork while simplifying upkeep. It’s a practical product that delivers on its promises.

3. Thompson’s WaterSeal Multi-Surface Waterproofer Stain

Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear, 1 Gallon

Rating: 8.6/10

Thompson’s WaterSeal Multi-Surface Waterproofer Stain in Clear is a game-changer for anyone looking to protect and beautify their outdoor spaces. This one-gallon container offers a versatile solution for various exterior surfaces, promising long-lasting defense against the elements while enhancing natural textures.

What We Like:

  • It truly waterproofs concrete, brick, and exterior wood, keeping your surfaces protected.
  • The clear stain lets the natural texture of your materials show through, giving a beautiful, enhanced look.
  • It resists fading and UV damage, so your surfaces stay looking good all year long.
  • Applying it is simple and straightforward, even for beginners.
  • Thompson’s has decades of experience, so you can trust their products.

What Could Be Improved:

  • While it hides the grain, some users might prefer a stain that still clearly shows the wood grain.
  • The “natural color enhancement” might be subtle for those expecting a more dramatic color change.

This Thompson’s WaterSeal product simplifies outdoor maintenance with its effective waterproofing and ease of use. It’s a reliable choice for protecting and improving the look of your home’s exterior.

4. Rainguard Water Sealers Brick Sealer

Rainguard Water Sealers Brick Sealer, Penetrating Protection Against Rain and Moisture Damage, for All Brick and Mortar Surfaces, Silane/Siloxane Waterproofer, Natural Finish, Ready to Use, 1 Gallon

Rating: 9.2/10

Protect your brick and mortar with Rainguard Water Sealers Brick Sealer. This one-gallon jug offers powerful, invisible protection against rain and moisture. It’s perfect for keeping your outdoor and indoor brick surfaces looking great and lasting longer.

What We Like:

  • Forms an invisible barrier that stops water, oil, and stains.
  • Prevents damage from freezing and thawing cycles.
  • Works on both indoor and outdoor brick surfaces without changing their look.
  • Covers up to 150 sq. ft. per gallon and dries in just one hour.
  • Safe for people, pets, and plants with no strong smells or VOCs.
  • Made in the USA and offers up to 5 years of protection.

What Could Be Improved:

  • Coverage can vary depending on how porous the brick is.
  • Requires two coats for best results.

This Rainguard Brick Sealer is a smart choice for anyone wanting to safeguard their brickwork. It’s easy to use and provides long-lasting defense.

5. Stormdry Brick Sealer – Clear Brick

Stormdry Brick Sealer - Clear Brick, Stone, Concrete & Masonry Waterproofer - 25-Year Certified Waterproofing Protection Against Penetrating Damp - 1 Quart

Rating: 9.2/10

Dealing with damp walls can be a real headache. That’s where Stormdry Brick Sealer comes in. This product promises to protect your brick, stone, and concrete surfaces from water damage for a long time. It’s designed to stop water from getting into your walls, which helps prevent those annoying damp patches and keeps your home warmer.

What We Like:

  • It works on many building materials like brick, stone, mortar, cement, sandstone, and granite.
  • Stormdry offers 25 years of protection against water getting into your walls.
  • The sealer lets your walls breathe, which is important for keeping them healthy.
  • It doesn’t change the color of your brick or stone, so your walls will still look natural.
  • It’s easy to apply with just one coat.
  • It’s been tested and approved by organizations like the BBA and the Energy Savings Trust.

What Could Be Improved:

  • It cannot be used on limestone or painted surfaces.
  • The 1-quart size might not be enough for very large areas, requiring multiple purchases.

Stormdry Brick Sealer offers a strong, long-lasting solution for preventing dampness in your home. If you have suitable masonry surfaces, it’s definitely worth considering for reliable waterproofing.

The Ultimate Buying Guide: Protect Your Bricks with the Best Sealers

Brick is beautiful. It adds character to homes and buildings. But bricks can get damaged by rain, sun, and frost. A good brick sealer can protect your investment. This guide will help you choose the right one.

Key Features to Look For

1. Water Repellency

The most important job of a brick sealer is to stop water. Look for sealers that are highly water-repellent. This means water beads up and rolls off the brick. It stops water from soaking in and causing damage.

2. Breathability

Bricks need to breathe. This means they can let out moisture that might be trapped inside. A breathable sealer lets water vapor escape. It prevents damage from trapped moisture, like spalling (when the surface of the brick flakes off).

3. UV Resistance

Sunlight can fade and degrade some sealers. Choose a sealer that is resistant to UV rays. This keeps your bricks looking good for longer.

4. Durability and Longevity

You want a sealer that lasts. Check reviews and product descriptions for how long the protection is expected to last. Some sealers can last for many years.

5. Finish (Matte vs. Glossy)

Sealers come in different finishes. A matte finish looks natural and doesn’t change the brick’s appearance much. A glossy finish can make the bricks look wet or shiny. Think about the look you want for your home.

Important Materials Used in Brick Sealers

Brick sealers are made from different materials. Each has its own pros and cons.

  • Silicone-based sealers: These are very good at repelling water. They are also breathable.
  • Silane/Siloxane sealers: These penetrate deep into the brick. They offer long-lasting protection and are very breathable.
  • Acrylic sealers: These are often more affordable. They form a protective layer on the surface. Some acrylics can be less breathable.

Factors That Improve or Reduce Quality

Factors That Improve Quality:
  • Deep Penetration: Sealers that soak into the brick offer better protection than those that just sit on the surface.
  • Good Breathability: This is crucial for preventing internal moisture damage.
  • UV Stability: Protects against sun damage and fading.
  • Easy Application: A good sealer should be easy to apply with a brush, roller, or sprayer.
Factors That Reduce Quality:
  • Surface Film Formation: Some sealers can create a plastic-like film. This can trap moisture and lead to peeling or cracking.
  • Poor Breathability: This is a major issue. It can cause serious damage to the brick over time.
  • Short Lifespan: Sealers that need frequent reapplication are less cost-effective.
  • Altering Brick Color Significantly: Unless you want a change, a sealer that drastically changes the brick’s natural color can be undesirable.

User Experience and Use Cases

Using a brick sealer is usually straightforward. Most products recommend cleaning the brick surface first. Then, apply the sealer evenly. You can use a garden sprayer, roller, or brush. Two thin coats are often better than one thick coat.

Brick sealers are great for many areas:

  • Exterior Walls: Protects against rain and freeze-thaw cycles.
  • Patios and Walkways: Prevents staining from spills and weather.
  • Fireplaces and Chimneys: Helps resist heat and moisture.
  • Retaining Walls: Protects against ground moisture.

A good brick sealer makes your bricks last longer. It keeps them looking great. It also saves you money on repairs down the road.


Frequently Asked Questions (FAQ)

Q1: How often do I need to reapply brick sealer?

A1: It depends on the type of sealer and the weather conditions. High-quality sealers can last 5-10 years or even longer. You’ll know it’s time to reapply when water no longer beads up on the surface.

Q2: Can I seal painted brick?

A2: It’s generally not recommended to seal over paint. Paint can trap moisture. If you want to seal brick that has been painted, the paint needs to be removed first. Some specialized sealers are made for painted surfaces, but research them carefully.

Q3: Will brick sealer change the color of my bricks?

A3: Some sealers can slightly darken the brick or give it a “wet look.” Matte finish sealers are designed to change the appearance as little as possible. Always test the sealer on an inconspicuous area first to see how it affects the color.

Q4: How do I clean brick before sealing?

A4: Clean the brick surface thoroughly. Remove dirt, mold, mildew, and any loose paint or mortar. A stiff brush and water are usually enough. For tougher stains, you might need a mild detergent or a specialized brick cleaner. Make sure the brick is completely dry before applying the sealer.

Q5: What is the difference between a water-based and a solvent-based brick sealer?

A5: Water-based sealers are easier to clean up and have fewer fumes. Solvent-based sealers often penetrate deeper and can be more durable, but they have stronger odors and require more care during application.

Q6: Can I use brick sealer in freezing temperatures?

A6: No, you should not apply brick sealer when temperatures are near or below freezing. Most sealers need moderate temperatures (typically above 50°F or 10°C) to cure properly and work effectively.

Q7: Do I need to seal new bricks?

A7: It’s a good idea to seal new bricks. New bricks are porous and can still be damaged by moisture and staining. Sealing them early can help maintain their appearance and integrity.

Q8: Can brick sealer stop efflorescence?

A8: Brick sealer can help reduce efflorescence, which is the white, powdery deposit that can appear on bricks. By preventing moisture from entering the brick, it makes it harder for the salts that cause efflorescence to migrate to the surface.

Q9: How long does it take for brick sealer to dry?

A9: Drying times vary by product and weather. Most sealers are dry to the touch within a few hours. However, it can take 24-48 hours or even longer for the sealer to fully cure and provide maximum protection. Check the product label for specific drying and curing times.

Q10: Is it safe to use brick sealer near plants and water features?

A10: Some sealers can be harmful to plants and aquatic life. Always read the product’s safety information and follow the manufacturer’s instructions. It’s best to protect nearby plants and cover water features during application.

In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.

If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.