Brick is a popular material widely used on commercial building exteriors. Typically, bricks are held together with mortar which is a material used to bind the brick structure together. While brick and mortar is an appealing look, it is not waterproof. The mortar is porous, so it absorbs water and other moisture, which can cause leaks in a brick building. Water and moisture can also cause efflorescence to appear on bricks. Efflorescence is white staining that appears on the masonry surface because water breaks down the natural salts in brick. So, if you notice either wet stains on the interior walls of your brick building, or you see that your brick is taking on a slightly white hue, it might be time to consider a coating application to slow down water intrusion into your brick and mortar building’s exterior.