LINDA BROCK, a registered architect in the United States and Canada, is an associate professor directing the building technology program in the School of Architecture at the University of British Columbia, Vancouver, Canada. She has given seminars on building envelope design and has conducted investigations of fa?ade failures for more than two decades. Her professional work and research has dealt with masonry, stucco and EIFS, "breathable" walls, energy efficiency, adhered brick systems, and Japanese housing models.