STEP ONE: First we identify the cracks and joints to be repaired
Common Areas: Check around your basement windows. It is common for a crack to appear from the corners of the window down towards the floor. If your basement is finished and you do not want to take down the drywall to check, you can have a look from the outside. Due to the foundation wall being partially exposed above grade, the crack should be evident, especially if you are finding a puddle of water below a window.
Other problem areas may occur in corners, concrete form ties and wall cork plugs. Usually, if there is a crack on one wall, unfortunately there is a good chance that there is another crack on the opposite wall in the same vicinity. The pressure from the initial crack is a linear shear force and exerts the "dead weight load" of the supported structure along this imaginary line to the opposite wall, causing the second crack to appear.
STEP TWO: Drilling and preparing the crack
Once we have located the crack and covered the floor area with newspaper and plastic, we can now begin drilling. We drill a 3/8" diameter hole on a 45 to 60 degree angle so as to intersect the crack or joint at the mid point of the wall. If possible, we alternate the holes on each side of the crack. Holes should be vertically spaced 6 to 10 inches apart and horizontally, the holes should be between 2 to 4 inches out from the crack. Once all of the holes are complete, we then flush out the drilling debris with water.
STEP THREE: Setting up for injection
We now install our packers and injection tips into each hole. this allows us to hook up our 0-3000 PSI airless piston pump for flushing and injection. Next, the pump injects each packer with a 5% crack cleaning solution until the concrete material and debris is seen exiting the face of the crack or joint. Again, using the same pump, we then flush each packer with large amounts of clean water.
STEP FOUR: Final prep and polyurethane injection
In order to prevent the loss of material, guarantee sufficient amounts of product within the cracks and promote a proper cure of the polyurethane, we apply hydraulic cement on the surface of the crack or joint. This is a temporary portion of the process as it may be removed with ease after the product has cured for approximately 24 hours. When the hydraulic cement has hardened the injection process begins by means of our high pressure pump injecting our premium polyurethane product. As the material is being applied it is common to see "oozing" of the product through the packers, the hydraulic cement and even on the exterior side of the foundation wall. This tells us that the product is finding its way through the entire crack and access holes.
Once all of the packers have been filled we are then finished. After a good clean up, you can enjoy years of a leak free basement in a residential dwelling, an underground car park in an apartment or commercial building. Satisfaction is guaranteed by our 25 year transferable guarantee. READ ABOUT OUR GUARANTEE
STEP FIVE: Removal of packers and hydraulic cement
When possible, allow at least 24 hours for the resin to cure before removal of hydraulic cement, packers and excess polyurethane. We provide a removal service or we can teach you how to do it on your own.
HOW IT WORKS
Our "no digging" technology is an advanced process using a polyurethane resin injection into the crack itself. This provides a "water-activated" barrier between the two sides of the compromised concrete section. Due to the pressure of our injection system, it forces the product to the outside wall where it can no longer make its way through because of the density of the earth. Therefore the polyurethane is forced to find its way back through the crack, where it hits the barrier created by the hydraulic cement. It follows the path of least resistance. The Polyurethane then expands at a 10:1 ratio," thus filling the entire crack from the inside out.
Any questions about the process, please feel free to contact us in our Contact Us section.