Construction lawyers and experts must be well-informed in the two major areas of construction law and construction technology, as both fields are heavily interdependent. Construction defects can often only be conclusively assessed when lawyers and technicians closely integrate their expertise. The collection of legal and technical topics brings together the respective perspectives by clearly explaining today's core issues in construction through numerous examples related to trades or building components. Initially, frequently occurring and typical questions are raised to illustrate the essential technical foundations, which are then legally commented on. The fourth issue addresses the reliability aspects of roof waterproofing. It covers the most common problems encountered with flat roofs and sloped roofs.