Sanremo Poly-Foam drills a 5/8” hole (size of a dime) which once filled is nearly invisible. Much smaller than traditional mudjacking companies that use a bigger injection hole that is typically 1 5/8” – 2”. Not only is our product lighter than mudjacking, and more environmentally friendly but due to the smaller size of the holes, there's less of an impact on the structural integrity of the slab.