CV Insulation. LC The Most Trusted Name in Insulation in Eastern lowa We Specialize in blown fiberglass blanket open and closed cell poly-urethane foam With trained installers and top-notch equipment, we do the job right the first time, on time. 1862 E. Avenue NE Cedar Rapids, IA 52402 Phone: 319.533.0807. Fax: 319.2610723