Interior Crack Repairs

Although our preferred method for crack repair is from the outside, that’s not always possible or practical. When there are immovable or high-value obstacles in the way—like patios, HVAC systems, or finished landscaping—it makes more sense to perform the repair from the inside.


And just like everything else we do, our interior crack repairs go a step above—actually, two steps above—the standard. Here's what sets ours apart:

Concrete floor with a wet, dark brown line running down the middle. Black lines are visible across the brown stain.

Step One:  Urethane Injection

The old method for crack injection used epoxy. But epoxy isn’t flexible and can’t accommodate foundation movement (and yes—foundations move a lot).


The industry’s solution was to switch to urethane injection, which can flex as the foundation shifts… but only to a point. Urethane can expand up to about 20% of its original volume.


So, what happens if the foundation moves and the crack widens beyond that 20%?


That’s exactly why we take things two steps further than the rest!


Step Two:  Carbon Fiber Staples

We install a series of Carbon Fiber Staples across the crack, connecting the two sides to prevent movement beyond the 20% threshold.  But just to be sure...we add one more step.

Step Three:  Carbon Fiber Strap

The final step is to install a 12" wide Carbon Fiber Strap over the entire crack area.  This is epoxied to the wall, and guarantees no opening of the crack.