Polyjacking vs Mudjacking: How Each Lifts a Miramar Slab
Polyjacking pumps liquid polyurethane foam through coin-sized holes at pressure. The foam expands, firms the soil and raises the slab, and gauges show when the base is solid. Mudjacking also drills holes but pumps a cement-based slurry instead. Choosing slab jacking vs foam means choosing what gets pushed beneath the concrete.
Slurry lifts through weight and volume, whereas foam rises on expansion alone. One small shot grows many times over and wedges into narrow gaps. Because foam is light, it adds almost no load to soft ground. That difference in weight is why foam can be the safer fill over a soft base. Mudjacking needs wider holes, and the slurry must cure before the slab can carry full loads. Either method demands a watchful crew, because overlifting cracks the concrete, so a level and the gauges guide the work until the surface matches its neighbor.
Either one works on an intact slab, so soil conditions and how long you can wait settle the choice. A careful estimate counts for more than the method.
Appearance and cleanup differ too. Foam holes stay small and vanish beneath a sanded cap, but slurry holes are wider and leave a bigger round mark. A mixing truck and long hoses need space too, and a narrow side yard can swing the decision toward foam. The sections below put numbers on each method and then map them onto your own surface.