I have some hollow-sounding voids in my garage floor, and I'm wanting to get the filled. The slabs are still level. Which method would you recommend? Mudjacking or polyjacking? I'm looking for the method which will last longest.

We have used both to level the deck around our swimming pool and my Sister in Law has raised her drive.

The polyjacking did just as well as the mud and was less expensive.

What is causing voids under your garage? Unusual--no?

Seems like everyone wants to inject stuff ,
But very few speak of fixing the cause of the problem.

quote:

Originally posted by bendable:
Seems like everyone wants to inject stuff ,
But very few speak of fixing the cause of the problem.

Are you saying to stuff the building contractor into those voids?


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I used poly on my sidewalk and stairs and 3 years later it settled perfectly level. They have it down to a science.