Concrete may appear solid from the surface, but beneath it, unseen air pockets known as voids can threaten structural integrity. At Mid Michigan Concrete Lifting, we specialize in filling those voids with advanced polyurethane foam—a fast, precise and lasting solution for homeowners and businesses throughout the region.
What is a concrete void?
A void is an air gap beneath a concrete slab, typically caused by erosion, soil settlement or improper compaction. Over time, these voids allow concrete to sag, crack or collapse. Left unaddressed, they compromise both safety and property value.
How do voids form beneath concrete?
In Michigan, voids often form when heavy rainfall or poor drainage systems wash away supporting soil. Freeze-thaw cycles contribute by shifting the ground and creating space under slabs. Construction errors, like inadequate compaction, can also cause voids, as can plumbing leaks, broken irrigation systems and even the decomposition of organic matter or animal activity beneath the surface.
Void formation isn’t just a cosmetic issue—it’s a structural one. Early intervention prevents further damage and avoids the need for costly full replacement.
What is concrete void filling and how does it work?
Void filling involves injecting polyurethane foam under the slab to fill air pockets and support the structure from below. At Mid Michigan Concrete Lifting, we drill small, precise holes in the affected area, inject the expanding foam and monitor the lift in real time. As the foam expands, it fills the void and cures within minutes, restoring stability without disturbing the surrounding area.
Why use polyurethane foam as a void filler?
Polyurethane foam cures quickly, making surfaces traffic-ready in under 30 minutes. It provides high compressive strength without adding extra weight to the slab. Because it is moisture-resistant, it prevents future erosion. The foam can be installed cleanly with minimal disruption and its inert composition means it won’t degrade over time.
What surfaces benefit from concrete void filling?
Void filling is suitable for many common residential and commercial surfaces. These include driveways and sidewalks that show visible sinking or separation, garage and pole barn floors suffering from load-bearing issues, and patios, porches, pool decks and steps where subsurface support has deteriorated.
Why choose Mid Michigan Concrete Lifting?
We’re not just a void filler—we’re a local team committed to safe, code-compliant repairs. With decades of experience in Michigan’s soil conditions, we know what it takes to keep your concrete supported for the long haul. Our polyurethane foam lifting services are efficient, affordable and environmentally safe.
Ready to eliminate voids and restore confidence in your concrete? Visit our Void Filling page to learn more or Contact Us to schedule your free estimate.
