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Best Sealer for Brick Walls 4.4/5 (7)

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 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 Heavy Duty 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 ΒΌ inch or more. This not only protects the brick wall but also will not alter the 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.

Questions on Sealing Brick Walls? Please Ask Below.

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16 responses to “Best Sealer for Brick Walls”

  1. Rich says:

    I have tried using brick sealers and applied then as per the manufacturers recommendations but after about 6 months they turn the bricks an opac white. I heard from a Masson that a high grade marine spar varnish would be good to seal the bricks and gring back the color as well as give the bricks a wet look. I tried a test area several months ago and the finish looks as good as it did the day after I sealed the bricks. I also heard of other uses for varnish inside on church stone floors and fireplaces. Can anyone comment on longevity of varnish on external bricks ?

  2. Kim Barbin says:

    looking for a sealer for interior brick floors

  3. Phyllis says:

    We have a metal building with a brick facade. The areas around the windows were not sealed when it was built and water is leaking in this area. Especially under the windows. When we ripped the sheet rock down, you see the back side of the brick. What is the best sealer for this purpose?

  4. Steve Mayer says:

    I have a brick chimney which when I get a huge rain I get a few drops of moisture in the house. What do you recommend to seal to prevent this from happening

  5. Chris P. says:

    Anyone have experience using RTV silicone rubber sealant?

  6. Elle says:

    What is the best way to seal a brick stoop and walkway? Can you use the same sealant on outside of brick chimney and brick on house?

    • Concrete Sealer Help says:

      Use a pump sprayer for applying the sealer. Look at Masonry Saver Brick Water Repellent. You an use it on the chimney and house brick.

  7. vivalaleta says:

    I actually do like the wet look for an exterior brick wall. Any advice on the best choice for this?

  8. MICHAEL BRYAN says:


  9. Gopalakrishnan says:

    Does spar varnish have Silanes and siloxane chemical content? Please give a reply

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