The triple glazed Sorpetaler windows are being installed now. The frames are taped tight to the exterior Grace membrane after being held in place with thin plywood tabs (replacing the thermal bridge steel tabs supplied with the windows). The exterior trim is screwed to the frame on top of the tape. It’s made of FSC Machiche, a super durable tropical hardwood. This is proving to be a challenge due to the variations in the Machiche. Next time I would go with a metal fin.