Mortar Sentry Water Seal is designed for use on brick, mortar, concrete block, cultured stone, sandstone and concrete. It is not recommended for use on non-silicate natural stone such as limestone or dolomite. Mortar Sentry is a silane/siloxane based waterproofing treatment consisting of two products. Mortar Sentry Water Seal 10 is a 10% active solution and is recommended for vertical surfaces. Mortar Sentry Water Seal 15 is a 15% active solution and is recommended for horizontal surfaces.
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Features & Benefits
- Creates a water repellent surface when applied to alkaline surfaces such as brick, concrete, mortar and cultured stone
- Cleans up with soap and water
- Water Seal 10 is used on vertical surfaces
- Water Seal 15 is used on horizontal surfaces
- Packaged in 1-gallon jug and 5-gallon pails
Mortar Sentry Water Seal Installation
What is the difference between Mortar Sentry 10 and 15?
Mortar Sentry 15 has a higher concentration of solution and it is recommended for use on horizontal surfaces because it is more durable. Mortar Sentry 10 should be used on vertical surfaces.
Can I use Mortar Sentry 15 on vertical walls?
Can I use Mortar Sentry 10 on horizontal surfaces?
We recommend Mortar Sentry 15 for horizontal surfaces. However, Mortar Sentry 10 can be used on horizontals with 50% more product to provide the durability horizontal surfaces require.
Some Mortar Sentry accidentally landed on window glass. How can it be removed?
Mortar Sentry permanently fuses to glass surfaces and is nearly impossible to remove. Mule-Hide strongly recommends sealing all glass surfaces with plastic or other watertight barrier prior to applying Mortar Sentry.
How long after application is the Mortar Sentry rain safe and fully absorbed?
The product is immediately rain safe since it penetrates inside the masonry.
What happens if it rains prior to the product being absorbed and the water carries it over
The glass will not be damaged.
Does Mortar Sentry change the color of my brick or concrete?
No. Mortar Sentry does not change the color of brick and concrete after it is applied.
Does it matter if the surface is damp before I apply Mortar Sentry?
The surface must be clean, but it can be damp. However, damp surfaces can result in reduced penetration of the waterproofing agent. Mule-Hide recommends applying Mortar Sentry products to clean, dry surfaces to ensure maximum penetration of the waterproofing agent.
Are there any special storage instructions?
Yes. Mortar Sentry should not be allowed to freeze and should not be stored in temperatures above 90°F.
What is efflorescence?
Efflorescence is a white powdery substance that forms on the surface of brick and concrete. It is caused when water vapor trapped within the wall exits the surface and deposits dissolved salts from the masonry as it evaporates. Efflorescence occurs when all three of the following conditions exist:
1. Must be water soluble salts within a wall. Quite often, these salts are found in the mortar.
2. There must be enough moisture in the wall to dissolve the salts.
3. There must be a path for water to migrate to the surface of the wall where it can evaporate.
Applying Mortar Sentry to brick and concrete walls prevents condition #2 from occurring, which prevent efflorescence from forming.
Will Mortar Sentry damage the roof?
Mortar Sentry is a water-base product. Although there are no solvents, it is always good roofing practice to protect any roofing membrane when applying a waterproofing solution to walls and chimneys. Mule-Hide recommends applying Mortar Sentry to walls before installing the new roof. EPDM single-ply membranes, acrylic or aluminum coatings.
If Mortar Sentry is sprayed on a chimney, and some of it gets on the flashing or shingles,
The product evaporates and or reacts with granules. There is no real effect.
How long does it last?
Mortar Sentry has an approximate service life of 10 years under normal weathering conditions. An easy way to test whether to re-apply is to throw water on the wall. If it beads up and falls off of the wall, Mortar Sentry is still properly functioning. If it begins to saturate the brick or concrete, it is time to re-apply.
If it has frozen, can I thaw it out and use it?
No. Once Mortar Sentry freezes it is unuseable and must be discarded.
If my patio gets dirty after treating it, can I power wash it?
Yes, you may power wash treated surfaces. Be sure not to get too aggressive and remove concrete or mortar while power washing.
What’s the best way to apply it?
Mule-Hide recommends using a low pressure, garden type, sprayer to apply Mortar Sentry. We also recommend applying Mortar Sentry from the bottom up to reduce the possibility of streaking.