Duct & Vent Cleaning of America, Inc. was rehired to re-clean ductwork for a second time in Dedham, MA on the same project within the mechanical rooms that was contaminated during the new construction project. The ductwork was cleaned during the project when our contractor asked us to complete the work. Upon completion of the construction job, as a result of the ductwork not being properly protected, the return ducts became re-contaminated with construction dust during the renovation.