FORENSIC INVESTIGATION of WATER PENETRATION THROUGH STUCCO VENEER



Improper window flashing (behind the stucco) and unsealed joints between stucco and window frames are a common cause of water penetration.


Stains at the top of windows are a common sign of water penetration.


Water staining on insulation indicates that this water penetration likely did not occur during construction.


Wood decay fungus behind window trim indicates that there is probably damage to wood framing or wall sheathing at this area.




Extensive damage to wall framing and wall sheathing occurred below a rain gutter where kick-out flashing
was not installed.


This house was five years old and had extensive damage to wall sheathing and wall framing.


This wall had extensive damage to framing and mold on the drywall, but there were no visible signs of problems at the inside of this wall.


The most extensive damage is unusally found below windows.


The lack of proper flashing between patios or decks and exterior walls is another common cause of damage.


Flashing had not been installed at the window flanges
and there was no visible caulk at many windows.


Water penetration can occur at any joints between stucco and other materials.


More damage to wall sheathing. The plastic barrier was installed after the stucco was removed to protect the house from further water damage during repairs.


© Building Consultants, Inc. 2009