Sealing brick seems like a great choice, but it can do more harm than good.
Brick and mortar are naturally breathable, and sealant can impede the moisture release.
Most new homes take climate into account when using brick, so moisture is a non-issue.
You can seal interior brick to protect it against humidity, but it’s not typically necessary.
Only use breathable sealant if you decide to seal your brick walls.
While most of us think we should seal pretty much anything outside, like our fence or patio furniture, brick is often the exception to the rule. Brick and mortar are two naturally moisture-wicking materials that, when installed and maintained correctly, should release moisture on their own without a sealant. In fact, most experts agree that using a product can actually seal in moisture rather than protect it from escaping—breaking down your bricks faster than you can stack them.
Let’s outline the few times when brick sealant is a good idea and explore how different sealants stack up to one another in this article.
Sealed brick walls are brick walls that have been sealed by a sealant, typically either silane or siloxane. These two materials are designed for porous materials like brick to help aid in the moisture release process while still protecting the material from the damage of the sun’s rays or extra rainy days. Sealant also helps simplify brick maintenance and cleaning by providing a flat surface that’s easy to wipe down.
But, because brick is specifically made to tackle moisture without a sealant, you probably don’t need it. Think about all the brick buildings and roads still around today without these new products. As one of the oldest materials, brick is known for its longevity and durability—without the need for a top coat.
Sealant is designed to prevent moisture from entering materials, so adding a layer of protection can help combat that. This could be helpful if you live in an area with a lot of rainfall, such as the Pacific Northwest, or areas with intense freezes.
Chat with a local mason in your area to see what they recommend for your home.
With all its crevices, nearly all types of brick naturally attract dirt and grime. They also fade over time (although most agree this is what adds to its charm). Adding a sealant like a siloxane sealant can help combat UV rays and add a barrier against everyday mess. This is especially good if you add brick inside, like in your kitchen or walkway areas.
There’s only one real con to sealing brick walls, but it’s a big one: Sealing brick can actually trap water in your walls and create a much bigger problem than the (non-existent one) you had to begin with. Unless your wall is starting to crumble or the brick is inside, you really don’t need to seal your brick. It will release moisture on its own, and adding a sealant can do the exact opposite of what you’re hoping for.
Most experts agree that, in most applications, brick sealing is unnecessary.
The best alternative is to paint your bricks instead. The process for painting a brick house is similar to applying sealant but can reduce the concern of fading or other appearance issues. That being said, it still can lead to the same issue of trapping moisture, leading to paint bubbles, peeling and other unsightly issues.
You could also try staining your brick, like with a limewash or masonry stain, to achieve a new look without running the risk of trapped moisture. You can also pressure wash brick when it’s stained, but not painted (unless you’re willing to bust out the paint brush afterwards)
Nine times out of ten, the answer to this question is no. Brick is designed to naturally remove water, and when you add a layer of sealant to it, you can actually either trap water in or prevent the cycle of evaporation. There are only a few times when sealing brick is recommended:
Your brick is starting to crack, or there’s water damage. Sealing the brick can prevent further damage without completely rebricking your home and paying the high cost of bricks, although you still run the risk of trapping moisture.
You have brick inside. While it’s still unnecessary, sealing the brick inside is less risky than outside, as there’s less moisture to worry about. Sealing interior brick can help it stay the color you want and prevent dust buildup without the risk of fading over time.
You bought a home with previously sealed brick. If the homeowners sealed the brick already and it’s starting to wear down, you’ll need to reseal it. Unfortunately, they’ve trapped you in this endless cycle, and you’ll have to keep it up.
I hired DNA Gates and Fences through HomeAdvisor for a driveway security gate installation at my business, and the entire experience was excellent. The team was professional, courteous, and highly skilled. They took the time to understand my security needs and recommended the best materials...
DNA Gates & FencesThey were really respectful, they did the work fast, and cleaned everything and I did not even had to ask, I recommend them
Fixly - Unlicensed ContractorJiovany and his team were so great from the start, at communicating then at the job, fast and dedicated. Didn’t leave until we were happy with every detail. They went far and beyond to make the place spotless and pristine. Reliable, responsible and respectful.
Site Bright LLCVery reliable extremely efficient. They helped me repair my property after water damage caused by burst pipe. They got everything repaired in a timely manner.
I contacted the chimney guys last week for an inspection and cleaning service, everything is done and thank goodness they came because they removed a lot of dirt and they told me that the person who came for maintenance last year had done nothing! So now you have my trust.
Top Leader Construction, Inc.Bayside Home Improvement did an incredible job remodeling our home! They helped us reimagine the layout, update the finishes, and create a space that better suits our lifestyle. Their attention to detail and commitment to quality craftsmanship were evident throughout the entire project....
Had these guys add 850 SQFT to my home. I could not recommend them enough. Process went faster than expected and they helped out dealing with permitting in Miami which was a plus. I highly recommend them and I did not have any issues
Hiring SJZ for our ADU project was the best decision. Sammy created a brilliant design that maximized the allowable space, and his crew brought it to life beautifully. The final unit is a stunning, functional living space that is been a game-changer for our property. Could not recommend SJZ...
I turned to John for garage door repair, and he exceeded all my expectations. He arrived the same day he was called, and the work was done quickly and professionally. The prices he offered were very reasonable, and I particularly appreciate the free estimate he provided. Communicating with...
Very good communication, and they are able to get the job done in a timely fashion. Definitely recommend them if you need any help with moving.
From average costs to expert advice, get all the answers you need to get your job done.
The cost to brick a house depends on several factors, like labor costs, home size, and brick types. Use our guide to estimate your bricking costs.
Discover the average stone restoration cost, including price ranges and key factors, to help you plan your next home project with confidence.
Door or window lintel replacement costs $400 on average, but there are ways you can save. On the other hand, complicated work will increase costs considerably.
Installing shutters on brick is a quick way to boost your curb appeal. From hardware to drilling tips, this guide covers every step of shutter installation.
When you notice small cracks or damaged sections of a brick wall, they need your attention. Use this guide to handle minor brick wall repairs.
If you're considering building a home with brick or stone, you need to know what is masonry? Learn the answer to ensure the finest quality.
