Basement Floor Void Fill

Basement Floor Void Filling–Foam Jacking, Baltimore, Maryland

Problem:

Backfill material below basement floor slab settled. Ground penetrating radar discovered extensive voids below the floor, and the homeowner’s geotechnical & structural engineers recommended filling the voids. There were also voids under the front stoop which needed to be filled.

Constraints:

The repair was required as a result of litigation, so the repair had to satisfy the engineers of both parties.

Solution:

High density polyurethane foam jacking to fill the voids below the basement floor concrete slab. Foam jacking injects material through small (dime-size) holes drilled through the concrete.

Result:

Concrete Jack foam jacking crew stabilized the slab and structural loads resting on the slab in a few hours. The foam used on this slab foundation repair project cures in a few seconds, so the customer was able to continue using the area as usual. In addition, high density polyurethane was injected below the front stoop & adjacent to the exterior front wall footing.