The Green Roof: Common-Sense Advice on Durability

April 29, 2011
Publication: Proceedings from the 26th RCI International Convention and Trade Show, Reno, NV, 2011
Author(s): Delisle D.A. Jeffrey Kerr

Abstract: Waterproofing components of vegetated roofs are concealed under a relatively thick over-burden assembly, making waterproofing repairs and maintenance complicated and costly. Waterproofing systems for vegetated roofs require particularly robust construction and detailing, along with careful quality assurance during construction.|This presentation will review waterproofing design and construction advice for vegetated roof assemblies; identify design considerations for the roof deck, waterproofing membrane, membrane-level drainage, insulation, and surface drainage; and draw on the authors' experience investigating failed vegetated roof waterproofing installations to examine common design and construction pitfalls that can cause premature failure of these systems, along with strategies to avoid them.