Brick is very porous so when considering a brick sealer to use for sealing a brick walkway, you want to make sure you go with a penetrating sealer and not a coating. If you apply a coating, like an acrylic or urethane, often times the water and moisture from below the surface will push up on the coating, causing it to turn white, or flake or peel. If a vapor barrier was installed below the brick walkway, a paint or coating may be ok, but I would consider first applying it to a test area.

The best penetrating sealer to use on brick is a water repellent sealer like the Armor SC25 Siliconate water repellent, or the Armor SX5000 DOT Approved Silane-Siloxane water repellent. Both sealers will work below the surface without changing the look or color of the brick. They chemically react below the surface to form a hydrophobic barrier within the pores that causes water and other liquids to bead off the surface. These types of sealers are designed to protect brick from deterioration caused by water absorption, freeze-thaw and ice damage, the growth of mold and mildew, and staining. When properly applied, these types of sealers can provide up to 10 years of protection.


Armor SX5000 Penetrating Silane Siloxane Concrete Sealer and Masonry Water Repellent (5 GAL)

Armor AR350 Solvent Based Acrylic Wet Look Concrete Sealer and Paver Sealer (5 GAL)

Armor AR500 Solvent Based Wet Look High Gloss Acrylic Concrete Sealer and Paver Sealer (5 GAL)

Armor UTN60 Oil and Gas Resistant Aliphatic Urethane Concrete Floor Coating

5 GAL Armor S2000 Concentrated Sodium Silicate Concrete Densifier Sealer and Surface Hardener

Armor SC25 Siliconate Water Repellent Concrete Sealer with Salt Guard (1 GAL)