ABOUT THE PRESENTER: Lorne Ricketts, MASc, P.Eng., RDH Building Science Inc. Lorne Ricketts, MASc, P.Eng. is a Principal and Building Science Specialist with RDH Building Science Inc. and specializes in new construction, investigation, research, and education projects. Recently, Lorne led the development of the Illustrated Guide to R30+ Effective Vaulted & Flat Roofs in Residential […]