Before
Here you can see the water staining on the wall and the floor as a result of water leaking from the crack.
During
Here you can see the urethane injection foam penetrating the wall, filling the voids, and coming back out through the crack for a complete and total seal.
After
Here you can see the foam has been cleaned up and the wall has been properly sealed. This leaky wall crack will no longer be a problem for this homeowner!