Best Sealer for Brick Walls 2023  4.7/5 (81)

This post was most recently updated on January 30th, 2023

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

Please Rate This Article/Product. You may post comments or ask questions below.

You may also like

guest

583 Comments
newest
oldest
Inline Feedbacks
View all comments
Veronica
Veronica
23 days 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 »

IMG_4652.jpg
Veronica
Veronica
21 days 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
20 days ago

OK. Thank you.

Grace Colonair
Grace Colonair
24 days 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 month 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 month 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 month 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)

Tommy
Tommy
1 month ago

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

Virgil Workman
Virgil Workman
1 month 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 month 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
2 months 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
2 months 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.

IMG_7600.JPG
IMG_7593.JPG
IMG_7875.JPG
jenny.briggs06@gmail.com
jenny.briggs06@gmail.com
2 months 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
2 months 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
2 months 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
2 months ago

What to seal an exposed interior wall built 1890

Andy
Andy
2 months ago

How long will it seal the brick for?

Jennifer
Jennifer
3 months 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
3 months 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
3 months 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
3 months 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
3 months 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
3 months 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
3 months 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
3 months 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
3 months 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
3 months 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
4 months 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
4 months ago

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

wilma motta
wilma motta
4 months 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
4 months ago

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

Dan Smith
Dan Smith
5 months 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
5 months 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
5 months 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!

robert mann
robert mann
5 months ago

i have building side wall 48 sq metre. brick construction twine wall no cavity . there is possible damp or has been in past wish to protect the brick work and try to improve the heat retention. any recomendations will hand paint or spray thank you

sharon
sharon
6 months ago

we live in a flood prone area and have been flooded three times this year. The lowest room in the house is brick double in some places and single in others. I am trying to make this room as waterproof as possible by using flood barriers on the doors and sealing the bricks from the outside. Will brick sealants protect against flood waters?

Karim Boujdi
Karim Boujdi
6 months ago

Hi I need a brick vanish to look like is whet please

Karim Boujdi
Karim Boujdi
6 months ago

All what I want I got a brick walls and I want to put something to look like wet

Misty
Misty
6 months ago

What can you use to seal white brick steps to keep them from looking dirty?

Misty
Misty
6 months ago

Not painted (I don’t think) we bought the brick like that. They are General Shale “Winterhaven”

Misty
Misty
6 months ago

See if you can see that picture

3ECF94D2-9CB4-4870-8EFA-C9079127A37B.jpeg
Dwaine Ellender
Dwaine Ellender
6 months ago

FYI The bricks were sealed before painting

Dwaine Ellender
Dwaine Ellender
6 months ago

I have a brick house that is already painted with a latex water base paint by Valpar. I want to know what is the best way to seal it from leaking water? please help

Bricky
Bricky
6 months ago

Internal brick walls built in 20’s or 30’s. Mortor has a lot of limestone and turning to powder. Is there something that can seal that (or something that will penetrate and dry like epoxy).

Bill B
Bill B
6 months ago

Ugh. Typos… with field-fired brick.

Bill B
Bill B
6 months ago

I live in a refurbished cotton mill. It’s build withe feel-fired brick, circa 1898. If the outside surface is broken, the bricks are often powdery inside. What would you recommend to seal the brick and add strength? Thanks!

Phil
Phil
7 months ago

To add to my previous question. The brick wall will be recovered with earth.

Phil
Phil
7 months ago

I have an 18 foot brick wall extending four feet below ground level to the foundation. After excavating and exposing the brick, what do you recommend to seal it?

Calvin Mackenzie
Calvin Mackenzie
7 months ago

I just had a workshop built with brick walls. They are sealed very well from the outside with stucco, sealer and paint. I am now looking to seal the inside bare brick walls to help stop staining and dust. I was considering a product called Comex 5×1. As I am in central Mexico. It is a Styrene-Acrylic sealer that is mixed 5 parts water and 1 part sealer. I have had good luck with it in the past and would appreciate your opinion.
Saludos

Last edited 7 months ago by Calvin Mackenzie
PAUL LESLIE STURZAKER
PAUL LESLIE STURZAKER
7 months ago

i have a basement underneath my house i can only seal it from the inside and i want to paint over the sealer basement is brick and render have you got a product for this thanks

Gary
Gary
7 months ago

Where can i buy this ?

Ed Staack
Ed Staack
7 months ago

Can Super M be tinted

Brittany
Brittany
7 months ago

Hi,

I have a brick backsplash that I would like to seal so that it is more resistant to stains but keeps the same look. What would you recommend?

Russ
Russ
8 months ago

I’m confused. Your article states that silicon based products should be avoided, but your top recommendation is silicon. Could you please clarify? Also, I’ve seen some silicon based products claim that they penetrate into the brick up to 1/2”. Can such a claim be true?

Maria
Maria
7 months ago

But are they breathable for brickwork and allow water vapour to escape?

Ian
Ian
8 months ago

We have a mainly rendered house with brick below Interior moisture readings of 17% can you recommend a breathable water repellent coating?

Tina
Tina
8 months ago

I have a double brick wall that has been rendered internally as we were having mould problems when the external wall got wet with rain. Should I seal the rendered internal wall as well as the external brickwork? Which products do you suggest?

Tina
Tina
8 months ago

Thanks. Should I use anything on the rendered wall before I paint it?

583
0
Questions or leave a review, please comment!x