moisture is the number one cause of building envelope failure and problem

• "More than three-quarters of all building damages registered have resulted from water and moisture"
  Lis?, K.R, (2001), Effects of climate change on built environments
• moisture control
  Lstiburek, Joseph W. and Carmody, J., (1993), Moisture control handbook: principles and practices for residential and small commercial buildings
• drainage
  Straube, J. F. and Burnett, E. F. P., (1998), Drainage, ventilation drying and enclosure performance
• hardboard siding, moisture
  Tsongas, G. A., Govan, D. P. and J. A. McGillis, (1998), Field observations and laboratory tests of water migration in walls with shiplap hardboard siding