Manufacturer of CertiFoam Extruded Polystyrene and RayLite Expanded Polystyrene Insulations.

Since 1966, DiversiFoam Products has been an industry leader with a strong commitment to engineering excellence, competitive pricing, outstanding quality, and customer service. Our wide variety of products can meet any of your insulation, packaging, and OEM needs.

Products & Materials

Contact Info


Company Info



Corporate Headquarters
Minneapolis/St. Paul
9091 County Road 50
Rockford, MN 55373

Phone: 763-477-5854
Fax: 763-477-5863


Regional Office
Chicago/Milwaukee/St. Louis
1101 Lori Lane
Mendota, IL 61342