Slabjacking pumps a soil-cement slurry under a sunken slab to "float" it back to original elevation. Slabjacking is a faster, cleaner, and less-costly concrete raising service versus replacement.Re-level and raise sunken concrete for the fraction of the cost of replacement. SlabJack NW proudly serves greater Seattle, your local cement raising experts in Mercer Island, Bellevue, Kirkland, Issaquah and Tacoma. Less