How to Change Sand Grout to Concrete Between Bricks

Whether you decide that your old brick walls need some renewal after all the years or you are moving into a preexisting home with a couple of design issues you’d like to change, sometimes changing the old sanded grout job to a simple concrete mixture is a necessity. While the task is fairly simple, it does require some spare time, access to a few tools and a passion for getting your hands dirty. Once you have re-grouted your brick with concrete mortar, you will enjoy the new look and feel for years to come.

Oscillating tool with grout removal blade
Vacuum
Mortar mix
Mason trowel
Grout bag
Handheld grout joint tool
Dust mask
Safety glasses

Instructions

- 1
  Remove the old sanded grout and prepare the brick surface for concrete mortar between the bricks. Remove the grout from between the bricks with the oscillating tool. Insert the blade for the tool into a grout joint while it is turned on and let it vibrate the grout out from the joints. Vacuum the surface after you are done to completely clean the joints out for new grout.
- 2
  Grout the brick. Mix up a batch of concrete mortar mix according to the manufacturer’s instructions. Prepare your grout bag and insert a tip if you prefer. Use a trowel to fill your grout bag roughly three quarters full. Insert the tip into the joint and squeeze the bag so the grout fills the joints. Fill all of the joints flush with the face of the brick.
- 3
  Wait 30 minutes for the grout to set up within the joint. Use your handheld grout finishing tool to finish off the joints. Apply pressure as you pull the tool across the joints, working your way from the top down. Allow the concrete grout time to cure before exposing the wall to cleaning products or sealers.

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