The BRE has carried out monitoring tests to measure the winter ventilation performance of the Portland Building, the recentlycompleted low energy building at the University of Portsmouth

Life-Cycle-Assessment (LCA) becomes more and more an important tool for industry to choose the adequate material or technique leading to an expected product quality from environmental point of view. As the environmental aspects are just one part of the decision making process, economical aspects have to be implemented as well. Sustainable construction is a major driving force of building and construction technology. The building sector uses extensive quantities of natural resources, raw materials and energy.