Welcome to TegraSeal Products

The inventors of bentonite/high density polyethylene waterproofing membranes and multiple accessory products (and the founders of Paramount Technical Products, Inc.) have started a new company, TegraSeal Products, LLC. 

Bryan “Mac” McGroarty, a chemist, inventor, and businessman/entrepreneur with 40 years in the waterproofing business, brings his wealth of experience to TegraSeal Products as the Chairman of the Board of Directors.  Dr. Stephen E. Braun, a research scientist, including almost 10 years as a member of the faculty at Harvard University, is the Chief Executive Officer of TegraSeal Products.  Pat McGroarty has more than 25 years of industry experience and multiple patents.  He has designed and built the manufacturing plant and is the Technology Director.  His bentonite waterstops, sheet membranes and tape products are currently used worldwide.  Jim Arnold, an experienced builder and general contractor, has over 30 years experience in the coating industry and is the Director of Operations. 

Our R&D focuses on making the job of the waterproofing contractor easier, safer, and more efficient.  Our new product line is designed to address real problems:  bad weather, rough concrete, and heavy, cumbersome lugging of materials over rough and sometimes treacherous footing.  In most cases, we have designed specialized products to perform specific applications such as podiums, lagging, under floor, “green landscaping,” and decks.  Each product is designed to provide lower installation and labor costs to give your customers a competitive advantage.  TegraSeal Products has filed for patent protection on our new products and their manufacturing methods.  Our goal is to help your business grow.  It is win-win for both of us.