When you have a patio installed on the side or back of your home, it can be a great area to relax after a long day, or have a BBQ cookout with the family. However, whenever you notice that the concrete slabs here aren't level with one another or are cracking in certain spots, it indicates a problem.
Typically, this is something that is caused from poor soil conditions underneath the slab, or it could be caused from the wrong strength of concrete being used during the time of construction. Regardless of what has caused the problem to begin with, it must be taken care of immediately before the damage gets even worse - and before anyone accidentally trips and falls over the un-even surfaces.
When it comes to taking care of the problem, the experts here at Don Kennedy and Sons make use of a technique known as polyjacking. It is similar to mudjacking, except for the fact that it makes use of a polyurethane foam instead of a messy concrete slurry mix that gets all over the place and takes an extremely long time to fully cure.
The foam we use is inserted into tiny drilled holes on the damaged surface of the slab. The expansion pressure of the foam helps to push the concrete back up and into place. The entire process doesn't take very long to complete, and the foam will be able to fully cure and harden within 15-20 minutes.