Imagine your beautiful brick home, its warm colors and strong structure. But over time, rain, sun, and dirt can start to wear it down. You want to protect that investment, to keep your brick looking its best for years to come. That’s where exterior brick sealer comes in, but choosing the right one can feel like a puzzle.
You’ve probably noticed how some brick surfaces seem to stay cleaner and brighter, while others look dull or even show signs of wear. Picking the wrong sealer can lead to disappointment – maybe it doesn’t work well, or it changes the look of your brick in a way you don’t like. It’s frustrating when you’re trying to do something good for your home and end up with more questions than answers.
This post is here to clear up the confusion. We’ll walk you through what makes a great brick sealer, what to look for, and how to pick the perfect product for your needs. By the end, you’ll feel confident in your choice and ready to give your brick the protection it deserves.
Top Brick Sealer Exterior Recommendations
- A CHIMNEY SEALANT WITH ENDURING PERFORMANCE: This brick protector creates a permanent bond with your chimney’s masonry for durable protection. It allows trapped moisture to escape, preventing freeze/thaw damage and ensuring lasting effectiveness
- SILOXANE BRICK SEALER PREVENTS LEAKS: Chimney waterproofing is important because cracks in your chimney can let water seep into the home; this water repellent effectively seals & waterproofs your chimney, protecting your home from water intrusion
- BREATHABLE BRICK SEALER EXTERIOR PROTECTION: This non-film forming sealant spray offers breathable, superior protection without altering surface color for residential chimneys, brick walls, and vertical masonry surfaces like stone, stucco, and more
- EASY APPLICATION WATER-BASED CHIMNEY WATERPROOFING SEALANT: Apply 2 coats of chimney sealer with a pump-up sprayer while using drop cloths to prevent overspray, but product is water based & VOC compliant, so it’s easy to clean up
- COVERAGE & DRY TIME: Our siloxane brick sealer covers 80-150 sq. ft. per gallon (2 coats). Dries to touch in 2-6 hours after you spray sealer. Waterproof in 4-6 hours, with continued strengthening over several weeks
- ULTIMATE PROTECTION PENETRATING CONCRETE SEALER: Our Silane Siloxane Sealer delivers a deep-penetrating, barrier that protects your outdoor surfaces from water damage and enhances the durability of concrete, brick, and stone for years.
- WATERPROOF & CLEAR CONCRETE SEALER: Creates a clear, waterproof barrier that protects surfaces from moisture without altering their natural appearance. This concrete stone sealer offers effective waterproofing while preserving the original look.
- WIDE-RANGING APPLICATION & COVERAGE: Ideal for sealing a variety of surfaces, including concrete, outdoor bricks, patio stones, limestone, granite, and sidewalks. 1 gallon covers 90-150 sq. ft. for effective coverage.
- SIMPLE APPLICATION: This concrete sealant waterproofing spray is easy to apply with a pump-up garden sprayer, providing even coverage & deep penetration. Perfect for DIY projects & professional use ensuring maximum protection with minimal effort.
- LONG-LASTING PERFORMANCE: Enjoy enduring protection with our concrete sealer spray, designed to withstand harsh weather and heavy foot traffic, keeping your exterior concrete, masonry, and stone surfaces protected year-round.
- INTERIOR AND EXTERIOR PROTECTION: Shields both interior and exterior brick walls with a water-resistant barrier. Helps prevent moisture, cracking, and flaking for long-lasting durability.
- CLEAR SATIN FINISH: This clear brick sealer enhances the natural color of masonry with a subtle satin sheen. Multiple coats increase shine and highlight the beauty of your brick surfaces.
- EASY-TO-CLEAN SURFACE: Forms a washable layer that repels dirt and grime. Simplifies cleaning for both indoor and outdoor brick walls, keeping surfaces looking fresh and well-maintained.
- REDUCES INTERIOR BRICK DUST: Acts as an interior brick dust sealer to minimize dust settling on floors. Low odor, water-based formula keeps your indoor spaces cleaner and more comfortable.
- VERSATILE APPLICATION AND COVERAGE: Apply with brush, roller, or airless sprayer. Covers 80-150 sq. ft. per 1 gal. Ideal for use as a masonry sealer for fireplaces, walls, and more.
- Penetrates deeply for long-lasting protection on vertical or horizontal concrete, masonry, stucco and manufactured stone.
- Helps masonry resist cracking, spalling, staining and other damage related to water intrusion.
- Service life is estimated at more than 10 years.
- Treated surfaces “breathe” – Siloxane PD does not trap moisture
- Great to use a brick sealer.
- WATERPROOFING STAIN – Bring out the beauty of your outdoors with Thompson’s WaterSeal Clear Multi-Purpose Waterproof Stain. Proven to waterproof concrete, brick, exterior wood and other exterior surfaces.
- CLEAR STAIN – This outdoor wood stain and sealer provides a clear finish. It will hide the grain, but still allow the texture to show. It provides complete protection while adding enhancing the natural color.
- FADE RESISTANT FINISH – The advanced polymers in this outdoor wood and deck stain deliver fade-resistant color so it stays looking great year-round. The coating resists UV damage, so you can apply with confidence.
- EASY TO USE – Whether you’re refinishing an existing fence or putting the finishing touches on a new patio, this concrete, brick, wood sealer is easy to apply. Clean the surface thoroughly prior to use for best results.
- THOMPSON’S – Protecting & maintaining all your exterior surfaces, can easily be simplified if you know where to start. Thompson’s WaterSeal is here to take the edge off, thanks to our one-coat products, informative how-to guides & decades of expertise.
- [ PREMIUM ] High-Strength Wall Waterproofing for Brick, Stone, Mortar, Cement, Sandstone and Granite. Not applicable on limestone or painted surfaces.
- [ 25 YEAR PROTECTION ] Stormdry’s cream-based formulation allows it to Penetrate Deeply forming an invisible Water Repellent barrier in a Single Coat Application
- [ BREATHABLE ] Allows masonry to breathe and dry naturally. Easy to Apply Penetrating Damp Treatment that maintains thermal properties of cavity wall insulation
- [ CLEAR] brick sealer exterior. Fully cured Stormdry brick damp seal will maintain natural appearance of the wall
- [ INDEPENDENTLY APPROVED, TESTED & VERIFIED: ] ✔️ BBA Approved (Certificate Number: 15/5198); ✔️ Verified by the Energy Savings Trust as an energy saving method; ✔️ Tested by University of Portsmouth
- Concrete patch filler seals cracks and holes in exterior or interior concrete and masonry surfaces
- Concrete sealer is ready to use – needs no mixing or additives making projects easy
- Flexible adhesive is low in odor, cleans up easy with water and provides a 24 hour return to service time
- Provides a durable, long-lasting concrete crack repair that resists gasoline, salt, grease or oil when cured
- Versatile concrete patch and repair may be painted with latex or oil-based paints
- Penetrates deeply for long-lasting protection on vertical or horizontal brick, concrete, masonry, stucco and manufactured stone.
- Helps masonry resist cracking, spalling, staining and other damage related to water intrusion.
- Service life is estimated at more than 10 years.
- Treated surfaces “breathe” – Siloxane PD does not trap moisture
- Great Brick Sealer
Protect Your Walls: The Ultimate Guide to Exterior Brick Sealers
Brick is beautiful, but it needs protection! Exterior brick sealers act like a shield for your home’s brickwork. They keep water out and make your bricks last longer. This guide helps you choose the best sealer for your needs.
Why Use an Exterior Brick Sealer?
Think of it like raincoats for your bricks. Rain, snow, and ice can damage brick over time. Sealers stop moisture from soaking in. This prevents cracks, crumbling, and ugly stains. It also makes cleaning easier.
Key Features to Look For
1. Water Repellency
This is the most important job of a sealer. It should make water bead up and roll off the brick. This keeps your walls dry.
2. Breathability
Good sealers let moisture vapor escape from inside the brick. This is called being breathable. If a sealer traps moisture, it can cause damage.
3. UV Resistance
Sunlight can break down some sealers. Look for one that resists UV rays. This means the sealer stays strong and effective for longer.
4. Durability and Longevity
How long will the sealer last? Some sealers need to be reapplied every few years. Others can last much longer.
5. Finish Type
Some sealers dry clear, keeping the natural look of the brick. Others can add a slight sheen or a darker tone. Choose a finish you like.
Important Materials
1. Acrylic-Based Sealers
These are common and work well. They are usually water-based and easy to clean up. They offer good protection and are often breathable.
2. Silane/Siloxane Sealers
These sealers penetrate deep into the brick. They form a barrier that repels water. They are very durable and breathable.
3. Water-Glass Sealers
These are less common but can be very effective. They chemically react with the brick to create a hard, protective layer.
Factors That Improve or Reduce Quality
Factors That Improve Quality:
- High Solids Content: More active ingredients mean better protection.
- Good Manufacturer Reputation: Trusted brands often make better products.
- Positive User Reviews: See what other people say about their experience.
- Easy Application: A sealer that sprays or rolls on easily is a plus.
Factors That Reduce Quality:
- Low Solids Content: Less protection for your bricks.
- Poor Breathability: Traps moisture, leading to damage.
- Short Lifespan: Needs frequent reapplication, costing time and money.
- Difficult Application: Can lead to uneven coverage and missed spots.
User Experience and Use Cases
Most users find applying brick sealer to be a straightforward DIY project. You’ll typically need a pump sprayer, roller, or brush. Always read the product instructions carefully.
Common Use Cases:
- Protecting the exterior walls of houses.
- Sealing brick patios and walkways.
- Preventing water damage on brick fences and retaining walls.
- Restoring and protecting historic brick buildings.
Choosing the right exterior brick sealer will keep your home looking great and protected for years to come.
Frequently Asked Questions (FAQ)
Q: What is exterior brick sealer?
A: Exterior brick sealer is a liquid product that you apply to the outside of brick. It creates a protective layer to stop water from soaking into the bricks.
Q: Why do I need to seal my exterior brick?
A: Sealing protects your brick from water damage, like cracks and crumbling. It also helps prevent stains and makes the brick easier to clean.
Q: How often should I apply brick sealer?
A: This depends on the product. Some sealers last 5-10 years, while others might need reapplication every 2-3 years. Always check the product label.
Q: Can I seal brick that has already been painted?
A: Generally, no. Most sealers are designed for bare brick. If your brick is painted, you might need a different type of coating.
Q: Will brick sealer change the color of my brick?
A: Some sealers dry clear and don’t change the color. Others can add a slight sheen or deepen the color of the brick. Check the product description for the finish type.
Q: Is brick sealer safe for the environment?
A: Many modern sealers are water-based and low in VOCs (volatile organic compounds), making them more environmentally friendly. Look for “low VOC” labels.
Q: How do I prepare my brick before applying sealer?
A: You need to clean the brick thoroughly. Remove any dirt, mildew, or old paint. Make sure the brick is completely dry before sealing.
Q: Can I apply brick sealer in cold weather?
A: No. Most sealers work best when applied in moderate temperatures, usually between 50°F and 80°F (10°C to 27°C). Avoid applying in freezing temperatures or extreme heat.
Q: What’s the difference between a sealer and a waterproofer?
A: For exterior brick, these terms are often used interchangeably. Both aim to prevent water from entering the brick.
Q: Where can I buy exterior brick sealer?
A: You can find exterior brick sealers at most home improvement stores, hardware stores, and online retailers.