1. Chemically Bond to the Substrate
Siloxane based masonry and brick sealers that penetrate into the substrate have many advantages over surface sealers such as acrylics, silicone and epoxies. The siloxane bonds chemically to the pores inside and below the surface of brick and masonry substrates. This keeps liquid water from entering into the brick. Also, since the sealer pentrates deeply, UV rays cannot degrade the masonry sealer. The penetrating sealer is below the masonry surface so it will give a long life.
2. Excellent for High Traffic Areas
Penetrating below the surface means that high traffic areas like driveways and sidewalks will not lose protection from high use. Surface sealers remain on top of the substrate and are eroded from use. Also the substrate will maintain its natural texture and sheen with a penetrating siloxane sealer.
3. Stopping Efflorescence
Efflorescence is the white color that is seen on many brick and masonry buildings. This is the natural salts that are carried to the surface of the brick by water vapor inside of it. Once the water gets to the surface, the water evaporates and leaves the salts behind on the brick surface. By stopping the water from getting into and penetrating the brick, the efflorescence will be stopped.
4. Prevent Brick Spalling
Penetrating siloxane masonry and brick sealers also allow interior water vapor to leave the brick or masonry substrate. This is an important difference between a surface sealer and many other penetrants. A surface sealer will keep interior water vapor that needs to escape inside the brick. In a cold climate, water vapor trapped behind a surface sealer will freeze and cause the brick to spall or flake. Siloxane penetrants will not allow spalling or flaking because the water vapor can breathe to the air.