While my family’s company, Great Lakes Builders, specializes in structural repairs, we are often called in to fix cracks in foundations that don’t present any overt structural problems but do allow water infiltration and need to be sealed up to keep the basement dry. That was the case on the job shown in this article.

For this job, we used Simpson Strong-Tie’s Crack-Pac Flex-H2O, which is a lot easier to apply than some of the brands that we have sourced from concrete supply companies in our area. The Crack-Pac system uses an injection resin that reacts with moisture and expands, creating a flexible dam in cracks up to 1/4 inch wide. The installation method I’ll describe here ensures that we are able to get continuous coverage in the crack to provide a good seal and a clean job.

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