Flameproofing and Cleaning Corp. We hold a Certificate of Fitness from the Fire Department of New York (FDNY) to issue flameproofing affidavits as well as to apply flame-retardant to public business buildings. We are fully insured, equipped with all the proper permits, and have full approval from the New York City Department of Buildings (DOB). Advanced Flameproofing and Cleaning Corp. is also a proud member of the National Fire Protection Association (http://www.nfpa.org).