Engelberth Construction, Inc. and GW Plastics, Inc. have teamed up together to build a 15,000 s/f manufacturing, warehouse and office addition to GW Plastics' technical campus for their GW Silicones Division. The addition will include a new ISO Class 8 clean room, the capability to support up to 18 additional machines for silicone molding and assembly, as well as private offices, bathrooms and a conference room. The design/build project also includes associated sitework, as well as alterations to existing office spaces.