Concrete Rx 207-228-9754. Residential, commercial or industrial, structural to cosmetic, Concrete Prescriptions is the service company dedicated to concrete repair and waterproofing of foundations and concrete structures. Specializing in the injection of a variety of epoxies and urethanes, Concrete Prescriptions can make any concrete structure permanently waterproof, as well as protect the structure against mold, radon gas, and pest intrusion.