How to fix a concrete retaining wall’s loose capstone

Do you have a loose capstone on your concrete retaining wall? I see it all the time.

Walls made from concrete blocks, like this one, are notorious for being a little less than flexible when the ground moves, prying cap stones loose. The fix is usually easy and it only takes a few minutes and doesn’t require expensive tools.

Supplies needed for how-to fix a concrete retaining wall:

• glue
• wire brush
• rag
• dust brush
• utility knife

For this repair of a concrete retaining wall, I used a wire brush/scraper tool to knock down the existing glue and the stick-to-anything construction adhesive. It’s also fairly forward-thinking to have a rag for spills, a dust brush, and a sharp blade in your utility knife.

Watch the video for the step-by-step how to fix a concrete capstone.

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