There is an old saying in the industry: "There are two guarantees with concrete: it will get hard, and it will crack."
While that sounds worrying, it is simply physics. As concrete cures (dries), it shrinks, creating internal tension. If that tension isn't relieved, the slab will create its own jagged, random crack right across the middle.
What is a Control Joint?
A control joint is an intentional weakening of the slab in a straight, planned line. We cut or tool a groove into the surface (typically 1/4 of the depth) and tell the concrete: "If you are going to crack, crack right here."
When you look into a joint and see a tiny hairline fracture at the bottom, that is a success. It means the joint did its job and saved the rest of your surface from random cracking.
Saw Cut vs. Tooled Joints
Depending on your aesthetic preference and the timing of the pour, we use two primary methods:
- Tooled Joints: Done while wet using a hand tool. These leave a rounded, classic edge perfect for sidewalks and traditional driveways.
- Saw Cut Joints: Cut after the concrete hardens using a diamond-blade saw. These offer crisp, modern, perfectly straight lines common in Beachwood and Solon.
When is a Crack a Problem?
In Northeast Ohio, freeze-thaw cycles exert pressure from below. Not all cracks are equal.
Structural (Warning): If a crack is wide enough to fit a **quarter** or if one side is higher than the other (offset), it indicates sub-base movement that needs attention.
Our Workmanship Standard
We cannot guarantee a crack-free slab—no honest contractor can. However, we promise to use industry-standard reinforcement and proper joint spacing to minimize the risk for years to come.