Profile: John Stortz & Son, Inc. manufactures slate ripper, slate cutter, slate hammer, tinners scraper & joint dresser, precision paint scrapers and bronze concrete finishing groovers. Our slate ripper is used to pull out nails without shearing them off. Our roofing tongs comprises a uniquely flexible and portable method for executing the most complex roofing sheet metal work on site. Our Burritt model roofing double seamer is the heavy-duty foot treadle action, which allows the mechanic to produce more work with less fatigue.