James R. Kirby AIA, GAF’s Building and Roofing Science Architect, has a Masters of Architectural Structures and is a licensed architect. He has nearly 25 years of experience in the roofing industry covering low-slope roof systems, steep-slope roof systems, metal panel roof systems, spray polyurethane foam roof systems, vegetative roof coverings, and rooftop photovoltaics. Jim presents building and roofing science information to architects, consultants and building owners, and writes articles and blogs for building owners and facility managers, and the roofing industry. He is a member of AIA, ASTM, ICC, MRCA, NRCA, IIBEC and the USGBC.

Kristin Westover P.E., LEED AP O+M, is a Technical Manager of Specialty Installations for Low-slope Commercial Roofing Systems at GAF. She has experience with a wide variety of projects in the civil engineering consulting industry specializing in repair and restoration of existing buildings, primarily for commercial buildings and high rise residential structures. Kristin’s project expertise includes roofing, waterproofing, facades, parking garages and pavements. She has performed assessments, written specification and design documents, provided bidding services oversight, and performed construction contract administration. Kristin also has experience in arbitration and litigation support as well as LEED O+M certification for existing buildings.