BELOIT, Wis. — New Mortar Sentry Water Seal waterproofing treatment from Mule-Hide Products Co. produces a water-repellant surface on masonry and concrete, extending the service lives of chimneys, walls and other surfaces.

Mortar Sentry is designed for use on alkaline materials, including brick, mortar, concrete block, cultured stone, sandstone and concrete. It can be applied to horizontal and vertical surfaces. It is not recommended for use on non-silicate natural stone, such as limestone or dolomite.

Mortar Sentry penetrates below the surface of brick and concrete, chemically reacting with the alkalines and silicas there to create a barrier that locks moisture out while allowing trapped moisture to escape. In brick structures, this waterproofing reduces the movement cracks caused when bricks absorb moisture and expand. In concrete structures, it helps prevent the accelerated aging caused when trapped moisture freezes during the winter or is exposed to high summer temperatures.

The treatment also helps prevent the rusting of concrete reinforcement, protects against the growth of mold and mildew, and eliminates the primary cause of efflorescence – the white powder left on brick and concrete when trapped water evaporates and leaves behind deposits of dissolved salts.

Because Mortar Sentry saturates brick and masonry – rather than simply leaving a film on the surface – it does not wear away when exposed to the elements. The original color and texture of the surface are retained.

Mortar Sentry is easily applied using a low-pressure, garden-type sprayer or a brush or roller.

The line includes two formulas. Mortar Sentry Water Seal 10 is recommended for use on vertical surfaces. Mortar Sentry Water Seal 15 provides the additional durability that horizontal surfaces require.

Both Mortar Sentry products are packaged in 1-gallon jugs and 5-gallon pails.