Filling Voids
Filling large voids requiring a rather limited load-bearing capacity is most efficient and economical by using a highly expansive hydro-insensitive polyurethane foam.
AP FILL 2-component polyurethane resin with expansion
capacity up to 35 times its original volume was specifically developed for filling large voids or disused structures, pipes, mine shafts and tunnels.
The 2-component PU foam fits seamlessly due to its good adhesion to soil and concrete.