Categorized under Home Builders. Current estimates show this company has an annual revenue of 140000 and employs a staff of approximately 2. J P Specialties, Inc. also manufactures a complete line of high-quality waterstop installation and welding irons, all of which are designed to save the contractor time and money. Earth Shield waterstops are used throughout the world by major engineering firms and project owners for primary and secondary containment, water and wastewater treatment, and ozone contactor structures. We invented the technology used to mechanically weld thermoplastic waterstops. Services offered include shop drawings, on-site and on-line waterstop welding certification, and individual corrosion resistance certification for the project owner.