Victorian ‘EnerPHit’ EWI detailing

It is critical that the training, design, detailing and installation of an EWI system is well considered otherwise failure will be built in, as seems to be the case in many installations. Specifically the detailing around openings and the correct understanding of the weather detailing at jambs and sill is vital. There are many systems and solutions but a basic APU bead (if fitted)  may well come away from the fenestration and then the expanding foam seal becomes the weather protection.  It is thus critical that this foam seal is correctly specified and located tight to the edge of the insulation board otherwise driving rain can enter the structure.  I welcome a discussion on this issue.