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Posted on Fri, Aug 5, 2011 : 6 a.m.

How to repair a loose brick

By Keith A. Paul

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Hi Keith:

I have a brick on my porch that is coming loose. Not only is it unsightly but I don’t want further damage. Please tell me how I can fix it.

Howard Z. , Canton, MI


Hi Howard:

You are right, replacing or re-adhering the brick now will save you a big headache later, especially if you leave it without repair through the winter when water can get in and freeze causing further damage.

The good news is that it is a fairly easy project and can be completed in a few steps.

1. Remove the loose brick. If the brick is already damaged, you can use a chisel and hammer to lightly tap at it to get it out, but be careful of the brick and mortar around it. You can also use a sturdy flat head screw driver to try and pry it out.

2. Inspect and clean the area. It is important to make sure the remaining bricks and the mortar are solid. If not, remove the loose bricks and pieces. Make sure there is no further underlying issues that may cause this project to become a bigger job. If the area is stable, blow out or sweep out the dust and remaining mortar, making sure it is a clean surface.

3. Apply mortar and set the brick. You will have to mix the mortar according to the package. Select one that matches your current mortar. Handyman tip: if the mortar still looks too new after drying, use a wet tea bag to lightly stain and give it an aged appearance.

Using a trowel, apply a thin layer (about an half inch thick) to the perimeter of the opening. If you had a damaged brick and are replacing it, make sure the measurements of the new brick are correct before applying the mortar. When setting the brick, ensure the brick is level and flush with the exterior face of the porch.

4. Grout the rest of the mortar. Use a grout bag and seal the spaces with mortar. Avoid getting the mortar on the face of your brick.

5. Seal the brick and mortar with concrete and masonry sealer. This will help prevent moisture from coming in and causing damage in the future. Before sealing the porch, wait approximately 48 hours to let the mortar set.

In no time you will be able to sit out on your newly repaired porch and enjoy the summer evenings.

Paul is a State of Michigan Licensed Builder. Paul serves as President and founding member of Nationally franchised HandyPro Handyman Service, servicing Washtenaw, Wayne and Oakland Counties. www.handypro.com. Listen to Paul every Saturday at 11 a.m. on “It’s Your Business, Make It Happen” WAAM Talk 1600AM. Email questions or comments to kpaul@handypro.com.