R & D Services, Inc. was established in August 1994 for the purpose of providing consulting and testing services to the insulation industry. David W. Yarbrough and Ronald S. Graves are the principals. Our goal is to work with manufacturers, associations and code bodies in areas of mutual interest.
General areas of expertise include testing and correlation of the properties of insulations and building materials. The measurements of properties of closed cell foams, thermal conductivity versus both temperature and density, product development and follow-up testing for insulation manufacturers are examples of specific areas of expertise. We specialize in the development of new or one-of-a-kind material or performance testing.