How to Fix Brick Walls

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A brick wall is held together by the mortar between the bricks. The wall can only be as strong as the glue that holds it up. Over time, the mortar can begin to crumble and deteriorate. This is both unattractive and weakens the structural integrity of the wall. You can replace the mortar with a few simple steps. As a result, you will have a stronger and more attractive brick wall.

Things You'll Need

  • Carbide-tipped grout saw
  • Cold chisel
  • Engineering hammer
  • 5-in-1 painter's tool
  • Garden hose
  • Mortar
  • Pointed trowel
  • Stiff-bristled brush
  • Work the tip of a carbide-tipped grout saw into the mortar. Scrape out the mortar with the tool, removing ¾ inch of the depth of the mortar. Remove all of the mortar running horizontally first.

  • Set a 5-in-1 painter's tool into the vertical grout lines. Use a hammer to tap on the end of the tool to knock loose the vertical mortar to a depth of ¾ inch.

  • Move a stiff-bristled brush across the face of the wall to remove the loose particles.

  • Fill a spray bottle with water. Spray the wall to fully saturate the bricks.

  • Add water to the mortar until the mixture is the consistency of peanut butter. Follow the package instructions for exact ratios of water to mortar. Stir thoroughly to combine.

  • Fill the end of the pointed trowel with mortar. Work the mortar between the bricks to fill the empty space. Work the point of the trowel back and forth to cut the mortar. Add more mortar until you have filled the space. Move the flat edge of the trowel back and forth across the brick a few times to compact the mortar.

  • Remove any excess mortar with the flat side of the trowel. Allow the mortar to dry until it is almost set. Use a stiff-bristled brush to clean off any remaining mortar on the wall.

Tips & Warnings

  • Thicker mortar lines will require you to remove the mortar deeper as well. Remove mortar to a depth 2 ½ times the width of the mortar.

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References

  • Photo Credit brick wall image by Kovac from Fotolia.com
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