Finding the best brick and masonry sealer can be a bit tough if you don’t know what to look for. Which is why we created this guide so that we can show you five great products. In addition to this, this guide also has an in-depth section pertaining to what to look for in one of these products.
There’s a common misconception that brick is waterproof and will always keep your home safe from excess moisture and leaks. But the truth is, brick is porous and can carry a lot of water. In fact, there are microchannels throughout the brick’s surface that can carry a lot of water. In olden times, harder, less porous brick was used on the outside of homes, but these days, you can use a good brick and masonry sealer to ensure that even traditional brick won’t let the moisture in.
Best Brick and Masonry Sealer in March, 2021
|PRODUCT NAME||SIZE||SQ FT PER GALLON*||BASED ON|
|SX5000 Silane-Siloxane Sealer |
|A-Tech Masonry & Brick Sealer |
|CHIMNEYRX Chimney Water Repellent||1 Gallon||75-200||Water|
|Eco Advance Waterproofer||16 oz (Liquid Concentrate)||240||Water|
|MasonryDefender Sealer||1 Gallon||100||Water|
1. SX5000 Penetrating Clear Solvent-Based Silane-Siloxane Sealer – Best Brick and Masonry Sealer for Overall Performance
This product, which is part of Foundation Armor’s siloxane-based line of sealers, is designed to penetrate into the material that you’re sealing so that it just doesn’t pool on the surface. As a result, this is something of an all-season product that will protect your masonry from weather extremes, freezing/thawing, and from de-icing salts. It comes in a five-gallon size and is formulated to protect your surfaces for up to 10 years.
This product provides one of the best all-inclusive functionalities – not only will this prevent water damage, but things like freezing/thawing, efflorescence, and mold are prevented as well. For those living in areas of the country with difficult weather, this is a great way to protect your property and keep it looking nice for years.
2. A-Tech Masonry & Brick Sealer – Best Brick and Masonry Sealer for Glossless Jobs
This particular product uses a water-based sodium silicate formulation to penetrate into your concrete or masonry and provide a barrier against moisture. In addition to this, this is also a product that actually hardens the surface so that concrete dusting isn’t a significant problem. Once applied, this sealer takes less than two hours to harden, which makes it a good choice for large jobs that require speed. This particular product comes in a five-gallon size that should be enough for relatively large-scale jobs.
While this product does a great job at stopping efflorescence and preventing water and other substances from causing damage to the concrete, for those looking for a glossy experience, this product doesn’t have much of a physical appearance. Also, this product might react with your concrete and actually increase porosity to some degree.
Overall, as a sodium silicate sealer, this product provides results for anyone looking to get a comprehensive seal on their bricks, concrete, or masonry. This is even a good cinderblock sealer that has a fairly easy to apply formulation.
3. CHIMNEYRX Masonry Chimney Water Repellent – Best Brick and Masonry Sealer for Chimneys
This product is unique among our reviewed brick and masonry sealers because it is designed for vertical surfaces like walls and chimneys. Water vapor easily escapes through the membrane of this sealer, which means that freeze or thaw damage and efflorescence have a lower chance to occur throughout the life of the seal. Despite this, water is effectively repelled so that damage does not happen to your brick and masonry surfaces.
For those with brick chimneys, this is a fairly reliable product that can be very useful when you are looking to protect your surfaces. While it may not quite have the versatility of the other products on this guide, it’s a better product for chimneys.
4. Eco Advance EACON16CON Waterproofer Liquid Concentrate – Best Brick and Masonry Sealer for a Low Carbon Footprint
This is a product that is actually safe to use around just about anyone, and it only takes about two hours to fully dry on your concrete surfaces. Additionally, this is the only product in the guide that ships in a concentrated form that you mix with clean water to provide about a gallon of sealer. As a result, this small bottle can cover about 248 square feet of concrete and masonry. Like the first product in this guide, this is a siloxane-based sealer, so you can expect a fairly breathable barrier that will allow for water vapor to exit the topmost layer.
For those looking to reduce their carbon footprint, this is a great product to consider. It’s also easy to apply, doesn’t have much of an odor, and is safe to use anywhere.
5. Interior/Exterior Brick Acrylic Sealer for Vertical Masonry Walls – Best Brick and Masonry Sealer for A Satiny Sheen
This product is the only acrylic sealer on our list. These sealers form a protective barrier primarily atop the surface of the brick or masonry. As a result, you won’t have many issues with concrete dusting. Also, this barrier will be smoother than the surface material, and it’ll be much easier to clean. It has a satin formulation, so even rough brick will become much smoother after application.
For those with chimneys or brick walls, this is a great product, and while it’s not really for floors, it definitely provides a reliable seal for most surfaces. The manufacturer even designed it to have low odor and relatively fast curing time.
Now that you have an idea of some of the top products on the market, now’s a good time to take a look at some of the features that you should be looking out for. There are a plethora of brick and masonry sealers out there, and each has its own advantages and weaknesses, which is why a guide like this can help you select the product that can provide you with the best overall experience. With that said, one of the first features you should consider is:
Just about every sealer penetrates the brick or masonry in much the same way that rain will penetrate its porous structure. Some products work deeper in the brick and mortar though, and it’s not impossible to find sealers that can penetrate as deep as almost half an inch into the structure of your masonry. When you really want to protect your brick or masonry from the elements, efflorescence, or dusting, a good penetrative seal can be the difference between a surface that remains protected for a year or a surface that stays resilient for more than a decade.
One of the best aspects of these sealers is that they will coat all of the porous passageways inside the outer layer of the brick or mortar without completely closing up these passageways. This allows the material to breathe, which can help maintain the longevity of the brick or masonry without sacrificing its resistance to moisture.
The Quantity of the Sealer
What’s the size of your job? As you might expect, quantity is everything, especially if you have a large area that you need to seal. It’s also important to take in the whole project – you may need sealer not only for your walls but for your concrete floors as well. With this in mind, buying larger quantities of sealer can be slightly cheaper, so don’t hesitate to buy a five-gallon bucket, even if you are not 100 percent, you’ll use all of the sealer on your surfaces.
This will grant you a little bit of protection in case you need to seal more than you initially surmised, and if you have some extra, you can apply sealer in spots later if needed or use the remaining sealer for other projects.
Management of Concrete Dusting
Have you ever noticed that concrete floors have a tendency to generate small quantities of concrete dust over time? This is called concrete dusting, and a brick and masonry sealer is specifically designed to help manage this accumulation. Concrete dusting occurs as a result of the daily use of the concrete, and typically, this dust almost looks and feels like chalk. Things like cleaning the concrete, foot traffic, vehicles, and even excess bleed water during the finishing process of the concrete can cause this damage.
A good siliconate penetrating sealer directly manages the dusting process by chemically reacting with the concrete so that a calcium silicate barrier is formed, which actually strengthens the top layer of the concrete. A good sealer with this feature will not change the coloration or general appearance of the concrete but will protect the surface from dusting.
Additionally, some topical acrylic sealers also create a top layer barrier against dusting, and these help keep the top layer of concrete from taking damage. These can be somewhat shiny, but they protect the layer from most damage, but if your concrete is prone to a lot of traffic or scraping, a brick and masonry sealer with this kind of protection may be more of a short-term solution.
Prevention of Efflorescence
Like concrete dusting, concrete efflorescence causes a powdery white substance to appear on the top layer of your surfaces. Unfortunately, unlike dusting, efflorescence can actually occur underneath a layer of brick and masonry sealer. This is because efflorescence is caused by excess water and vapors in the underlayer of the concrete pushing soluble salts and other materials to the surface. When this liquid evaporates, it can leave these materials on the topmost layer, which can fall under the sealed layer of concrete. This, unfortunately, makes for a very unattractive experience atop your concrete. This can occur on brick, cement, lime, clay, sand, admixtures, or even your trim.
Fortunately, there are products currently on the market that can inhibit this reaction. Hydrophobic sealants work well to prevent this occurrence by preventing water from traveling inside of the concrete, which is a cause of this efflorescence. Also, sealers that keep the concrete sealed yet keep it breathable, allow the water vapor to simply pass through without leaving behind minerals.
How a Good Sealer Can Protect Your Surfaces
When you’re in the market for the best brick and masonry sealer for your property, there are some important considerations to make. A good dealer can protect your surfaces from:
- Rain and wind: When the wind is driving the rain, it has a tendency to go almost horizontal, and when the rain is going sideways, it becomes much easier for the moisture to work its way into the cracks and crevices of your brick walls. A good sealer provides a steady barrier against this.
- The freezing/thawing process: When you live in an area with harsher winters, the yearly freezing and thawing process can really damage your flooring and wall surfaces. Fortunately, many of the products on the market can keep water out of the brick surface so that less damage occurs to the brick.
- Mold and mildew: The last thing you want is to provide a pleasant surface in which mold and mildew can grow freely. When you keep water out of the brick or mortar surface, you inhibit the moisture that these harmful growths require to grow.
- Spills: Accidents can definitely happen, but moisture from the occasional spilled milk can easily work its way into the superstructure of your brick or masonry. For this reason, it’s crucial to have a good seal against this kind of seepage so that the moisture won’t cause damage and mold, algae, and mildew won’t form.
Finding a good brick and masonry sealer can really add life to your walls and floors. The products that have been selected for this guide all stand out as great solutions for those looking to protect their masonry, brick, and concrete surfaces. This is an ever-changing field, and formulations that will seal your surfaces even better are bound to appear on the market, but for now, any of the products that we’ve highlighted here can help keep your property looking great for years to come.