Heavy clay cracks walls along the mortar joints, and then uses those joints as a route in.
Griffin has more below-grade walls than the areas south of it and the heaviest clay we work in, so cracked basement walls are one of the more common calls we take in Spalding County.
The clay holds water against the foundation for a week at a time and swells while it does. A block wall under that load cracks along the mortar joints, usually horizontally partway up the wall, and those joints then leak every wet season.
The sequence is assess, relieve, seal. We measure deflection to see whether the wall needs bracing, install stone-packed perimeter drainage to take the pressure out of the clay, and then inject the cracks and treat the joint run. On most Griffin lots the drainage discharges by gravity.
Our basement crack repair scope is the same on every Griffin home, whatever the Spalding County ground turns out to be doing.

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Trench Guys came to my home and corrected a sagging kitchen floor. They did a great job and guarantee their work for 10 years! I absolutely will be calling them anytime I need help.
I don't usually write reviews but John and his crew are absolutely awesome. They did my crawl space encapsulation. I got other quotes - don't waste your time with the other guys. Outstanding service at an incredible price!
Thank you Trench Guys for repairing our foundation. John gave our home a thorough inspection and explained the process so we knew exactly what the problem was and our options. They worked hard and were friendly and knowledgeable.
We run the same crews across Spalding County and the rest of Middle Georgia.
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