The last home in the study is slightly over four years old and has an EIFS polymer based system. This home was also constructed with proper sealant joints.

As you can observe from the photo, again the windows rotted out around the backer rodded sealant joint.  This was due to water infiltrating the wall through the window and not through the EIFS or its sealant joints.

Other than moisture problems that did occur below the windows, these three homes have another common factor.  All three have been retrofitted with the Flashpans and treated with a spore block material.  The Flashpan will drain any moisture that gets into the wall cavity to the exterior.  It allows for ventilation to the otherwise sealed area under the window and the window can be treated with a spore block inhibitor annually.