Quotes: Rainscreens

1474410_634722699927296_1359967026_n“… it can be concluded that the face seal systems evaluated  in this study are very sensitive to design and construction variables which  lead to ingress of water through the cladding, and that in the environment  of the Lower Mainland it may not be possible to achieve acceptable performance  with face sealed systems. Concealed barrier systems are also very sensitive  to water ingress through the exterior cladding and weather barrier. In  order for these systems to perform adequately, significant improvement  is required in the design and construction of interface details.”

Survey of Building Envelope Failures in the Coastal Climate of British  Columbia
CMHC, June 1998

Resources

The Framework of Residential Construction

Wikipedia: Leaky Condo Crisis