Environmental Design • Research + Analysis

• This research project examines the advantages, limitations, and architectural applications of green roof systems, using the North Boulder Branch Library as a primary case study. The study considers green roofs as living systems that integrate architecture, landscape, and environmental performance to address challenges such as stormwater runoff, urban heat, energy consumption, and loss of habitat.
• The research evaluates environmental and social benefits including stormwater management, improved thermal performance, extended roof lifespan, habitat creation, air-quality improvements, and increased access to greenspace. Technical analysis examines the layers that make these systems possible, including vegetation, growing medium, drainage, root barriers, and waterproofing.
• The study also compares extensive and intensive green roofs, considering differences in structural loading, depth, vegetation, maintenance, installation cost, and long-term performance. Potential benefits are evaluated alongside important limitations, particularly increased initial costs, structural requirements, waterproofing considerations, and continuing maintenance.
• Rather than treating a green roof as an applied landscape feature, the project examines it as part of an integrated building system, demonstrating how architecture, structure, water management, energy performance, ecology, and human experience can work together to improve the environmental performance of the built environment.