Backed by the resources of DuPont, the Tyvek® Building Envelope Specialist Network has been established to answer the industry's building science questions about weatherization barriers and wall flashing systems.  Each Specialist plays a unique role in the industry as a trusted advisor to building and industry professionals.  In order to build this expertise, DuPont had developed a rigorous training program that includes product knowledge, building practices, and the science behind air and moisture management, among many other relevant topics to help the Tyvek® Building Envelope Specialists support the industry.