ABOUT US

Our Roots Are In Roofing

Our Pioneering Heritage

There was a time when the standard for modern commercial roofing systems was built-up roofing (BUR). It was used by the world’s best builders, but BUR roofing systems were heavy, complex, difficult to repair and susceptible to extreme temperatures. In flat roof construction, a small group of innovative flat-roof pioneers in Europe developed polymer modified bitumen as the new gold standard.

One of those early pioneers was Marco Danese, born in 1940 in Italy. After studying economics at the University of Bologna, Marco joined his father’s rockwool insulation business. Marco solved manufacturing limitations by inventing a rewinder to produce continuous rolls — a breakthrough that changed flat roof installation forever.

In 1961, Marco founded Nord Bitumi in Verona, Italy, to manufacture bituminous polymer membranes. Nord Bitumi expanded rapidly into six plants in three countries before Marco relocated and U.S. operations commenced.

Verona Roots

A Family-Owned Business

In 1981, Marco opened his first Nord Bitumi U.S. location in Plattsburgh, New York. In 1983, he opened the Macon, Georgia plant, which quickly became headquarters. In 1996, the operations were sold, and by 1998, Stefano Danese joined Marco to start General Polymers in Macon. In 2013, the name was officially changed to SD Polymers.

Always family-owned, we re-focused on closed-loop and open-loop recycling programs. Today, we divert millions of pounds of waste stream products from landfills, re-compounding raw materials for major commercial roofing roll, plastic injection-molding, and rubber compounder clients across the globe.

Mission & Vision

"To provide premium, tested, and reliable recycled polymer formulations that reduce raw material costs and optimize carbon footprint solutions, without sacrificing product performance."

By working individually with client manufacturers, we create custom formulations suited specifically for their facilities. We believe recycling plastic and rubber should actively support financial outcomes, rather than add unnecessary operational friction.

Sustainability Focus

SD Polymers operates with strict adherence to local environmental regulations, offering comprehensive audit services to companies aiming to minimize production scrap waste.

Whether processing TPO membrane scraps, rubber cords, or polyester sheets, our Macon, Georgia plant re-integrates high-grade materials back into active manufacturing cycles, conserving petroleum resources and optimizing supply chains.

Support & Lab Services

In-House Testing Laboratory

We do not guess; we verify. Our fully equipped in-house laboratory conducts comprehensive raw materials auditing and finished-product performance testing, including:

  • Contaminant screening and sorting evaluation
  • Polymer melt point indexation and density measurement
  • Tensile, tearing, and elongation performance under extreme temperatures
  • Freeze-thaw cycles and UV degradation exposure simulation

Technical Consulting & Toll Services

Our sales representatives are technical engineers with decades of production line experience. We provide custom integration support directly for your company’s equipment, including:

  • Custom pelletizing, shredding, and pulverizing formulation services
  • Toll compound and compounding process evaluations
  • On-site waste stream audits to recover commercial plastic/rubber scrap
  • Try-before-you-buy formulation samples sent to your facility
Are you looking for a polymer to improve your product performance but are concerned about compatibility with your equipment?