An RPM International company, Dap Products, Inc. is headquartered in Baltimore, Maryland. They are a leading manufacturer of caulks, sealants and adhesives. Just a half an hour drive from their offices in the trendy Canton area of Baltimore, you'll find one of the company's two manufacturing plants. Rather striking from the highway, the complex's six large branded silos. They rise from among the plant's main buildings and are shaped fittingly enough like, well . . . giant tubes of caulk. [ . . . ]