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You are at:Home»Projects and advice»How to replace a damaged brick

How to replace a damaged brick

LAST UPDATED: 5th January 2023 by The Editorial Team

How to replace a damaged brick

Summary: Step by step guide and video showing replacing a house brick, removing an old brick and installing a new brick.

Contents

  • How to remove a brick
    • Removing the brick
    • Fitting a new brick
    • Tools needed
    • Materials needed
  • How to replace a brick in a wall video

    How to remove a brick

    Sometimes bricks can get damaged and need replacing. If you are replacing a load barring brick or more than 3 bricks in one area, it is recommended that you consult a professional first.


    Removing the brick

    • First use a hammer drill and masonry bit to drill holes into the brick and surrounding joints. The more holes you create, the easier it will be to remove the brick. If you have an angle grinder, and you feel confident using it, it may be quicker. See how to use an angle grinder.
    • Using a cold chisel chop out the brick. If some of the brick is stubborn and won’t come away from awkward corners, then you may wish to use a jointing or plugging chisel. They have sharp angled blades that allow you to get into tight areas that regular chisels may not allow.

    Fitting a new brick

    • Having removed the brick, sweep out the hole where the brick was with a small brush then use your sand and cement to make a small amount of mortar. Place a bed of mortar on the base of the hole and on the sides if possible. Then spread some on the top of the new brick and pat down a little to help it adhere to the surface.
    • Once the mortar is in position, push the brick into its hole. Some mortar will squeeze out so trim this excess with the trowel before wriggling the brick into a level position where the joints line up with the existing joints. Use the pointing trowel to push in more mortar where it may be needed.
    • Finally point the new joints to match the existing shape. It is critical to perform the pointing at the right time, which is when the mortar is almost, but not quite dry. Mortar pointing when too soft will be too light, which may not match existing mortar and may acquire cracks. Pointing the mortar when too hard may prevent the mortar from setting against the brick properly, thus causing a weakness in the joints.
    • As a finishing touch you may want to clean the brick and surrounding area using a damp brush.

    Tools needed

    • Hammer drill
    • Masonry bit
    • Angle grinder (optional)
    • Gloves
    • Safety goggles
    • Dust mask
    • Cold chisel
    • Trowel

    Materials needed

    • Mortar

    How to replace a brick in a wall video


    Author

    The Editorial Team

    The Editorial Team at lets-do-diy.com are a team of experts led by Mark Wilson. We have been creating DIY projects, articles, costs guides and product reviews since 2008. For more info see our about page.

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    • Brick calculator
    • Building a barbeque
    • Building a brick garden wall
    • Pointing brick and blockwork joints

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