The Leading Causes

  • Exterior opening (e.g. windows) with inadequate flashing details
  • Missing kick out or diverter flashings
  • Poor roofing/wall/chimney design (dead valleys)
  • Improper deck ledger or patio attachments
  • Exterior walls with inadequate, defective or omitted weather resistive barriers
  • Overall building science – Interior vapor trying to get out providing moisture to the back of wall sheathing
  • Wood sheathing not gapped properly during initial construction
  • Improper stucco mix, incorrect thickness applied with little or no curing times
  • Defective or misapplication of wire lath
  • Missing weep screed at wall to foundation transitions