The foam will fill up the parts of the concrete that are uneven and will raise it to the proper height.
Raise concrete slab with foam.
The average 4 inch thick concrete slab only weighs 1 3 of a pound per square inch.
We suggest using an air purged gun to deliver foam under the slab.
So how do you raise a concrete slab with foam.
You can avoid this expense if you do it yourself with the help of a jacking pump which can raise the concrete slab to the needed level.
Locate the dips get the right equipment and foam.
Use 5 8 inch masonry bit to drill a hole through the concrete and spray the foam into it.
Foam jacking is a concrete slab repair method that uses a high density polyurethane foam to raise the slab.
Raise rite concrete lifting is committed to providing top quality services to homeowners schools churches municipalities property managers and has a broad commercial base.
Lifting foam will fully expand within 10 15 seconds allowing you to monitor the raising and preventing over raising the slab.
Holes are drilled through the sunken slabs foam is pumped under the slab raising it to the desired height.
Raising concrete with polyurethane foam is done with incremental injections.
This process is much the same as mud jacking an older method that uses a concrete slurry mixture to obtain the same results.
Patch up the holes with concrete and your new driveway or sidewalk or walkway will look good as new.
Hiring a professional service to lift or jack up the slab can be costly.
It caused people to trip stepping up and to st.
After the geolift has done its magical work the last thing left to do is patching up the holes.
Concrete raising is the alternative to costly replacement.
If it is done correctly.
Lifting a sunken slab may be necessary to level the surface.
A good solution for diyers.
The 6 ft x 6 ft sidewalk slab at our front stoop had sunk on one end to a 10 1 2 inch step.
Smaller sections of sunken concrete can be cut out using a wet saw and then lifted out with a crowbar.
The foam will expand and harden filling the void in the ground and leveling the driveway.