Best Sealer for Brick Walls 2024

This post was most recently updated on March 4th, 2024

What is the Best Sealer for Brick Walls Update

Concrete Sealer Review remains a trusted resource for concrete sealer tips and reviews since 1993. In this updated article, we discuss the qualities to look for when choosing a sealer for brick walls. If you have questions about the best sealer for brick walls, we want to hear from you! Feel free to leave us a comment with some pictures below.


Brick Wall Sealer

Brick Wall Sealer

Best Sealer for Brick Walls to Prevent Water Penetration

Bricks are used for many aspects of construction. They are considered as one of the strongest and longest-lasting building materials in history. Bricks can be made of clay, concrete, stone, ceramic, or lime and sand. Like other exterior building materials, a brick wall should be sealed to slow the effects of weathering. When moisture is allowed to penetrate the brick, the damaging effects can cause cracking, breaking, crumbling, and efflorescence problems.

Sealing Brick Walls

Sealing a brick wall will lock out unwelcome moisture and protect the bricks and mortar joints from damage. Unless you want to purposely change the appearance, the best sealer for brick walls is a non-gloss penetrating clear sealer. A siloxane-based formula like Masonry Saver Water Repellent or SuperSeal-M will penetrate deeply into most masonry brick walls for optimal protection.

The best sealer for brick walls should be breathable but will not promote peeling or flaking. The siloxane-based brick wall sealers have active ingredients that penetrate the brick pores up to ¼ inch or more. This not only protects the brick wall but also will not alter its appearance of it.

When dealing with the best sealer for brick walls, try to steer clear of acrylics, silicones, and similar types of waterproofing sealers that linger on the surface. These brick wall sealers tend to trap moisture vapors and may promote efflorescence, mold, mildew, and other damaging effects.

Finding the best sealer for brick walls is the key to superb protection and increased longevity of all types of brick walls. Regular maintenance including cleaning and sealing a brick wall will ensure it will be a long-lasting building material that will not fail.

Top Brick Wall Sealer Ratings

Super Seal-M Water Repellent – Best Overall Brick Sealer

SuperSeal M Sealer Review

SuperSeal M Sealer Review

SUPER SEAL-M is a water-based water repellent made of a special hybrid of Silane and Siloxane. SUPER SEAL-M provides water repellency to porous construction materials such as bricks, stone, concrete blocks, mortar, and grout. The active ingredients in SUPER SEAL-M Water Repellent Sealer are a mixture of different-size particles-some larger, some smaller to fill different size voids. The active ingredients in SUPER SEAL-M Water Repellent can chemically react with the substrate, ensuring long-lasting performance.

Where To Find: SuperSeal M Concrete Water Repellent
Types of Substrates: Plaine Poured Concrete, Bricks, Brick and Chimney Walls, Masonry, Natural Stone
Coats Required: 1 coat
Coverage Per Gallon: 200  sq. ft
Application Tools: Pump Sprayer
Dry Time: 1-2 Hours
Manufacturer: Clemons Concrete Coatings
See Review Article Here: Super Seal-M Water Repellent Review

MasonrySaver Heavy Duty Water Repellent – Best All-Purpose Concrete Sealer

Masonry Saver Heavy Duty Review

Masonry Saver Heavy Duty Review

MasonrySaver® (Also known as “Defy”) All-Purpose Heavy Duty Water Repellent is a modified siloxane-based product designed to penetrate deeply into most masonry and concrete pores. Unlike acrylics, silicones, and other waterproofing sealers that remain on the surface and trap water vapors, this masonry waterproofing product allows deep penetration of its active ingredient of up to 1/4 inch or more.

Where To Find: MasonrySaver (Defy) Heavy Duty Water Repellent
Types of Substrates: Plain Poured Concrete, Brick, Masonry, Natural Stone, Brick and Chimney Walls
Coats Required: 1 coat
Coverage Per Gallon: 75-150 sq. ft
Application Tools: Roller, Sprayer
Dry Time: 1-2 Hours
Cleanup: Soap and Water
VOC Compliant: Compliant in all States
Manufacturer: Saver Systems
See Review Article Here: MasonrySaver Heavy Duty Water Repellent Review

Questions on Sealing Brick Walls? Please Ask Below.


Best Sealer for Brick Walls Video

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david
david
13 days ago

I’m looking for a breathable sealer for interior brick with a schmear/type O mortar coat to slow dust and efflorescence. All that can be done to control exterior water has been done but in periods of heavy rain moisture colors walls at corners where sediment layers have built up between brick foundation layers. We’re in Denver, CO where it’s pretty dry but climate is becoming more erratic. No water pools inside but wall stay damp a long time after these flash floods. Best options?

Nick DiLibero
Nick DiLibero
4 months ago

Hello I have a 4 story brick building in need of repair and repointing in some areas on the front and rear of the building. The sides can probably get some minor repointing, but overall are in good shape. One of the sides was spot pointed 12 years ago and the other 30 years ago. I received a quote form a mason contractor(quite expensive)and he is insisting on grinding out and repointing the whole building, he claims that is the only way he can guarantee the building not to leak inside.. Do you feel that just sealing the exterior with… Read more »

Nawezi chinyanta
Nawezi chinyanta
6 months ago

What is the best vanish can you use for pan brick’s wall in a restaurant

Amanda
Amanda
8 months ago

Hello, for early 1900s porous brick that still has left over plaster, would brushing loose debris and then sealing it with multiple coats actually work to prevent too much crumbling? What sealer is best?

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Greg Brown
Greg Brown
8 months ago

Is it possible to spray the sealant with an airless sprayer?

Bonnie Coleman
Bonnie Coleman
9 months ago

My home is older and has cement wall’s that have been painted outside. The bottom of the house gets a lot of moisture. What can I use to seal the bottom of the house for moisture. I did power wash it to get most of the paint chips off but of course I couldn’t get all of them.

jim lucey
jim lucey
9 months ago

what is best to seal antique bricks made in the 1890’s ? they are on a veneer wall that is very exposed to the elements .
thanks you

Natalie
Natalie
10 months ago

Hi there! We are looking to seal the brick exterior of our 1756 home but white-wash it first with 50/50 paint/water. (It has already been powerwashed.) I’ve read some of your responses that say a sealer can not be used over paint. So how do I seal white-washed brick?

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Robert
Robert
10 months ago

How would you deal with an exterior brick wall that you want to paint and has water sometimes hitting the other side? Clean, dry, apply sealant, then masonry primer, then elastomeric paint? Or???

Robert
Robert
10 months ago

So then just clean, dry, masonry primer and elastomeric paint?

Elle
Elle
10 months ago

Is there a way to add a tint to a non-gloss sealer on wall brick?

Karen
Karen
10 months ago

Seal and protect…

Karen
Karen
10 months ago

I am currently “exposing two structural brick columns in my bathroom. What’s best to seal/lorote to with and look nice?

karen
karen
10 months ago

Hi there. Thank you for such a quick reply. I actually am in front of the computer to order a sealant you might refer. I was going to try to possibly phone you for advice on this and another item also concerning brick pavers. I’m ready to order products. Columns I mentioned are close to the shower and I’m aiming for a semi-gloss(?), just a natural look. The house was built in 1903 and is a “Romanesque” rowhouse, downtown Baltimore. I’m changing the bathroom, bit-by-bit, to a more modern, rustic style. Stand-alone tub, etc… These bricks have not seen the… Read more »

karen
karen
10 months ago

Thank you Mr Scott Paul,

I will take your advise.

Too bad about the pavers.. Nature is taking over!!!

thank, so much
Karen

karen
karen
10 months ago

Just to be clear..

in this instance you prefer the concrete sealer over the brick sealer even though the brick sealer mentions to not use an acrylic on unsealed brick? I’m a bit confused. I do like the idea of lower odor though since it will be applied in a relatively small space.

Phyllis
Phyllis
10 months ago

Hi there Scott, My name is Phyllis. I recently moved to AZ and I bought a slump block house. I was told that I need to seal it, I don’t even know if that is true as I have been also told that I don’t need to seal it. I am doing research on sealers and I would like one that is safe for my health and one that will last a while. What do you recommend?

Phyllis
Phyllis
10 months ago

My house.

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Phyllis
Phyllis
10 months ago

It is not painted.

Giacomo
Giacomo
11 months ago

Hello’ Scott
Please see the pic.
Do You have an opinion ? I am having this issue the last 15 years
Thought was the roof and/or eaves trough ,replaced them without improvement , many experts have been consulted without solutions , getting worst during the winter ,
Thank You in advance for You comment.

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Kate
Kate
11 months ago

Hi Scott. We have a brown brick fireplace in the living room . It’s 3 years old. We just noticed the bricks turning white with grit and flaking off. We live in Georgia on the coast, the house is at 55 percent humidity or less year round so there is no moisture. We do not use the fireplace very often. How do we stop this?

Catherine Tully
Catherine Tully
11 months ago

My 10 year old house in Houston, TX is brick veneer on all 4 sides. The bricks are showing what looks like tiny, white pebbles where the red of the brick has sluffed off. Some bricks have chips which weren’t there before. Can you tell me what is happening and how I can stop this deterioration. Many thanks,

piper ward
piper ward
11 months ago

Hi I have a home with Japanese sand and straw wall finish (exterior) would this be able to work on it for waterproofing? I am looking for a good product for exterior and can’t find one… Thanks for any knowledge

Susan Lawson
Susan Lawson
11 months ago

Hi Scott. We have a 1960’s built commercial building where the exterior brick had been painted by prior owner. There are a few leaking areas with gaps in the mortar. Do we need to repoint or can we caulk those gaps? Then put some type of sealer on the exterior painted brick? Any advice would be appreciated.
Many thanks, Susan

Susan Lawson
Susan Lawson
11 months ago

Thanks Scott. I’ll keep researching and I’ll remember these sealants if I’m lucky enough to have an unpainted brick wall one day.

Russ Tremaine
Russ Tremaine
11 months ago

What is the perm rating of Super Seal-M brick sealer? or what sealer product has the highest vapor transmission?
Also what is best brick wall sealer to prevent old mortar dusting without changing appearance?

Veronica
Veronica
1 year ago

My husband and I recently bought a house built in 1890. The downstairs bathroom was gutted when we purchased it and we’re in the process of renovating. The room has an exposed brick wall that we plan to keep exposed. The wall is a mix of painted and exposed brick (see photo). What sealer would you recommend for an exposed brick wall in a bathroom? There is a shower and I’d like it to look as close to its natural brick state as possible. Also, I understand that the sealer won’t work / won’t seal the painted brick, but does… Read more »

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Veronica
Veronica
1 year ago

Thank you. I’m not sure my contractor has a pump sprayer. Will the MasonrySaver Heavy Duty Water Repellent sealer work as well?

Veronica
Veronica
1 year ago

OK. Thank you.

Grace Colonair
Grace Colonair
1 year ago

What do you recommend for an interior concrete wall that is in a basement, fully underground? Trying to keep mold/mildew from forming. WE have cleaned the walls and installed a dehumidifier.

Dan m
Dan m
1 year ago

We recently exposed the brick wall in our basement in Tennessee. Its a 3 course think wall and 3 feet of the brick are below grade. All of the brick were previously covered in plaster. We have worked hard to remove the plaster but there are still a lot of “dusty” looking areas. When wet the brick looks fantastic and so some of the acrylic sealers are tempting, but we also want to careful to allow the brick to breath since its below ground and susceptible to moisture being pulled thru the brick. Is there any product that would help… Read more »

ann
ann
1 year ago

hello Scott. I have a rather large external brick wall. can I seal only the bottom half of this or do I need to seal the whole wall

Ann

Steve Lewis
Steve Lewis
1 year ago

we are remodeling our kitchen and exposed a 100+ year old brick chimney passing through it as a feature. After we are done removing plaster and cleaning it what would you recommend to finish/seal it with (non glossy)

Kelli Berry
Kelli Berry
11 months ago

Hi Scott, I have the same question and scenario as Steve. I don’t want enhancement on the bricks.

Tommy
Tommy
1 year ago

Will this sealer work for ceramic pool tiles? If not, what’s your recommendation?

Virgil Workman
Virgil Workman
1 year ago

We have cold air coming in where our kitchen is is there a sealant I can put on the outside brick to prevent air coming through thanks.

Theresa C
Theresa C
1 year ago

Have cinder block walls outside that have been painted and have efflorescence. After cleaning areas, what is best product to use before repainting to stop from reoccurring as happening throughout our community.

MaryB
MaryB
1 year ago

We have a totally brick home exterior in Florida. On the South side the lower 5 or 6 courses of bricks are flaking away, some small chunks and in some cases the entire outer surface in one big piece. We cleaned all of them and applied a sealer that was recommended by a builder. It has not helped at all. Do you have any suggestions?

Ken
Ken
1 year ago

Had a stamped concrete patio poured summer of 21. Sealed shortly after per contract by same company. Have what looks like fog or or thin ice layer after any moisture contacts patio. Company has sent rep out to examine after phone discussion. Company rep has explained nothing out of ordinary. Pictures are included. Please share your thoughts. Thank you.

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jenny.briggs06@gmail.com
jenny.briggs06@gmail.com
1 year ago

Hi Paul. I have a brick garage it is on the fence line of my property and I suspect it was built in the 50-60’s. I have converted some of it into a studio and now I’m experiencing internal mould. I have stripped off the bottom metre of plaster board to expose brick internally and yes they are wet I suspect on my neighbour side some of the brick work is under soil. I know I will need to dig down to foundations and seal. My question is should I use a bitumen sealer below soil and then what products… Read more »

Anthony Michael
Anthony Michael
1 year ago

We have a bitumen floor in both bedrooms the two corners of the bedrooms ,both floors are wet in the corners we don’t know how to cure it ,it seems to be only when it rains .

Marc Levy
Marc Levy
1 year ago

Two questions:
1) We have a 100 year old brick house and had two hurricanes which packed tangential rain resulting in water intrusion in many areas. Which sealant is best to prevent this?
2) The humidity in our house seems to change based on the outdoor climate. We live in a high-humidity climate region where the interior of our house often has humidity in th 60-70% range. Will one of the sealants help regulate/decrease the internal humidity? If so, which one is the best for this?

Adele
Adele
1 year ago

What to seal an exposed interior wall built 1890

Andy
Andy
1 year ago

How long will it seal the brick for?

Jennifer
Jennifer
1 year ago

I am looking to prevent my stone walls from dusting, and I don’t care what the finish looks like, the priority is to stop the dust. I see you have recommended filming sealers to others who have this problem, but have not recommended a specific product. Is there a specific filming sealer you would recommend?

Cindi Smith
Cindi Smith
1 year ago

We are finishing a large detached garage in Utah with thin bricks that are attached with Locktite Premium Max Construction adhesive and then grouted. All exterior walls of the garage are covered with the brick. We want to seal the brick to prevent moisture behind it that could freeze and pop off the thin brick. What do you recommend to seal the brick of the garage, how should it be applied, and how long will the sealant protect the brick from moisture? Thank you.

Cindi Smith
Cindi Smith
1 year ago

Thank you. Temps here right now are 20-35. Can the sealant still be applied to protect from winter rain and snow, or do we have to wait until spring and hope brick won’t get moisture behind it?

Ryan
Ryan
1 year ago

I have a brick wall on a house that leaks inside when the rain hits it from the right direction what sealer would you recommend or would a sealer not help this situation thanks

Peter
Peter
1 year ago

Hi
Does the brick work need to be completely dry before you apply the sealant? Just wondering if i need to wait until summer.

matthewpartridge2088
matthewpartridge2088
1 year ago

What can i put on the inside of my brick walls to stop moisture coming through. The body corp wont allow anything to be applied externally.

Andre Baran
Andre Baran
1 year ago

Should 2 coats ofSuperSeal Brick M be applied to a brick wall? If so what is the time between coats. TIA

Andre Baran
Andre Baran
1 year ago

Sorry for the additional question please. If I desire to apply a second coat of SuperSeal Brick-M do I have to do it before a certain amount of time elapses to prevent the first coat from blocking the second? Is a second coat recommended or helpful?

Andre Baran
Andre Baran
1 year ago

Hi, two questions please. 10 years ago I used Thompsons Water Seal on a small section (6ft by 6 ft) of a brick wall. I now want to do the whole wall with a silane sealer. Can I remove enough of the Thompsons with mineral spirits or EC-1800 to be able to apply the silane sealer on that section?
Secondly, SuperSeal-M says it is composed of various sized particles. Will it clog up a pump up garden sprayer if used to apply it? TIA.

Serge Bobbera
Serge Bobbera
1 year ago

Hi, all our concrete block walls are already painted. Will SupaSeal-M penetrate the paintwork or does it need to be stripped off first?

HLT
HLT
1 year ago

What sealer for a 25 year old brick driveway that you don’t know if it has ever been sealed? Penetrating dealers say don’t use if previously sealed. Surface coat sealers say don’t use if not previously sealed (moisture forms under coat).

Lisa
Lisa
1 year ago

What sealer is best for a rendered wall. We get a lot of moisture on this wall

wilma motta
wilma motta
1 year ago

Hi I have a brick waterfall that runs 24/7. What do you recommend as the best sealer for this? Super seal m or masonry saver?
thanking you in advance

Vinny
Vinny
1 year ago

I want to build a shower stall of bricks. What are your suggestions?

Dan Smith
Dan Smith
1 year ago

A landscaper needs to add dirt over the brick that is above the foundation of my house in order to grade the water away, I think that brick should waterproofed first.
what do you think and what would you use to do this?

Deb Zinn
Deb Zinn
1 year ago

We have exposed the chimney inside the house. Someone told us we should put a sealer on it. Is that true, and if so, what?

Bill
Bill
1 year ago

I have an interior brick wall I want to seal mainly to avoid the dust that comes from the brick and protect it from spills etc. Best I can tell, the bricks were made around 1860, some of which seem quite soft. The room is vacant at present, but whatever I use has to be reasonably suitable for indoors. Suggestions? Thanks!

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