soil erosion's usually caused by water issues,,, doubtful you get much air/wind erosion down here,,, resolve the water problem then pack some supporting soil in the void using a 2x4,,, polyurethane foam is a 2nd choice followed by cementitious grout ( mudjacking ),,, the downside's when the operator injects too much material & the slab rises out of alignment
mudjacking & foam are 2 methods approved by fdot, feds, & most other states' dot's,,, they are considered permanent repairs
home warranties - idk re fl but wtr issues are generally only covered in the 1st year
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