How to repair brick wall mortar

Written by ehow contributor
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How to repair brick wall mortar
Regularly restoring mortar can keep a wall steady. (Getty Creative)

Over time, mortar may become weak and begin to break down. It is important to replace the mortar as soon as possible to keep the same strong bond between the brick joints. The following will help in your efforts to repair a brick wall.

Skill level:

Things you need

  • Paint scraper
  • Cement
  • Sand
  • Trowel
  • Pointing tool
  • Hose
  • Rake with wheels or a 13 mm (1/2 inch) pipe
  • Small broom
  • Muriatic acid
  • Safety glasses
  • Rubber gloves

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  1. 1

    Remove the old loose mortar with a paint scraper.

  2. 2

    Sweep the small remaining mortar bits out with a small broom.

  3. 3

    Mix a small amount of mortar to repair the joints.

  4. 4

    Match the color to the existing mortar.

  5. 5

    Make the mortar's consistency like toothpaste.

  6. 6

    Wet each joint with a spray of water.

  7. 7

    Place some mortar on a trowel.

  8. 8

    Place the trowel within the joints of the bricks.

  9. 9

    Push the mortar in with a pointing tool.

  10. 10

    Fill it completely.

  11. 11

    Flatten the mortar to make it level with the other joints with a rake with wheels.

  12. 12

    Allow it to sit 10 minutes.

  13. 13

    Sweep the joints of loose materiel.

  14. 14

    Allow it to dry over night.

  15. 15

    Remove any residue left on the bricks with muriatic acid.

Tips and warnings

  • Some experts use a piping bag to fill the joints.
  • A 13 mm (1/2 inch) pipe also works well when concaving the surface to make it level with the adjoining mortar.
  • A recipe for a small batch of mortar is 3 parts cement with 1 part sand.
  • Mortar repair may also be bought pre-made.

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