Surface Seal
View of the eopxy surface seal, as well as the ports which will receive the polyurethane foam injection.
Testing the crack seal
Before injecting the polyurethane foam into the crack, the epoxy surface seal is tested by inserting water into the ports within the crack. Water will also be poured in from the top of the wall if the crack is visible there as well.
Crack Seal
View of the epoxy crack seal from top to bottom.
Injecting the foam
The polyurethane foam comes in two separate tubes, and when the chemicals mix they react within the crack becoming the expanding foam. The reaction takes several minutes to completely cure, allowing for the fluids to reach all depths of the crack.
Crack Seal Injection Ports
The polyurethane is injected into the wall crack via ports. While injecting the foam, the installer can gauge by the pressure and resistance to confirm when one section of the crack is completely filled up. The port in this photo is capped, and the polyurethane is visible within.
Polyurethane Foam
View of the polyurethane foam at the top of the crack. The foam is injected starting at the bottom of the wall crack. As the injection reaches the top, the foam will expand out a bit, confirming it is expanding and villing all the voids. This extra foam will be scraped away to complete the process.
