What is a good paint remover for concrete subfloors?

A good paint remover for concrete subfloors is a solution of trisodium phosphate and hot water. Paints with a chlorinated rubber or resin base that cannot be removed by trisodium phosphate may be removed by grinding with a concrete or terrazzo grinder. We do not recommend the use of solvents to remove paints or old adhesive residues because the solvents can remain in the concrete and negatively affect the new installation.