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Brick Batter (Hi Temp Mortar)


1-gallon pail of high-temp mortar for bricking your evaporator firebox. Made in the USA.


How to Use Brick Batter

  1. Mix contents of this pail to an even consistency. Then, spread the mortar on the left, right and bottom sides of a brick and wiggle it into place in your firebox. You do NOT need mortar on the back side of the brick. If mortar is too thick to spread, mix in a small amount of water.
  2. Spread the mortar in the same way for each neighboring brick until the entire first layer of brick is in place. Then spread mortar over the top of the entire layer of bricks. Note that you will be putting mortar on both surfaces of each joint. Also, there will be approximately 1/8″ – 1/4″ space between neighboring bricks.
  3. Repeat Steps 1 and 2 for each subsequent layer of brick. When all bricks are in place, go back and fill in any cracks by spreading mortar over each joint.


Downloadable Bricking Guides

Corsair Evaporator

Silverplate Drop Flue Evaporator

Silverplate Raised Flue Evaporator



It is recommended that protective clothing be worn to prevent contact with eyes or skin. Wash exposed areas promptly. For eye exposure, flush with water immediately and consult a physician.

Safety Data Sheet

This product — also known as Derby 3000 Mortar — is manufactured by U.S. Refractories® in Louisville, Kentucky.


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