An injection port is a small fitting installed in a hole drilled through a concrete slab, through which polyurethane foam is injected in a clean, controlled way to lift and stabilize the concrete.
In depth
Holes about the size of a dime (5/8 inch) are drilled through the settled slab and ports are set into them. The injection gun locks onto each port, and the two-part polymer is injected through it into the space beneath the slab. Working through ports gives the technician controlled, targeted delivery and keeps the process clean.
When the lift or fill is complete and the foam has cured, the ports are removed and the small holes are patched with high-quality grout, leaving them virtually unnoticeable.
How Acme applies it. Acme’s Smart Lift System uses port-based injection so foam is placed exactly where it is needed, then removes the ports and patches the dime-sized holes so the repair is barely visible.
Related terms: Foamjection, Two-Component Polymer, Smart Lift System, Polyurethane Concrete Raising
Frequently asked questions
How big are the injection holes?
About 5/8 inch, the size of a dime, far smaller than the 1-5/8 to 2-inch holes mudjacking requires. After patching they are barely noticeable.
What happens to the holes afterward?
The ports are removed and each hole is filled with a high-quality grout, leaving the slab surface clean and virtually unmarked.