I have an ICF wall that will have an EIFS on the exterior. This wall will connect at a 90 degree angle to a Tridipanel with 1" shotcrete on the exterior. How would i treat the joint between the 2? I assume there must be some need for flashing but i don't have clue what to do. Any advice would be most appreciated. I've attached a detail that better illustrates the situation. The home will be located in S. California, therefore minimal rainfall.

Is the joint horizontal or vertical? Also not sure what you are trying to accomplish connecting a hurricane design wall to a ICF wall that has been proven to make it through hurricanes.

Are they on the same foundation? Is it a safe room?

One would think the EIFS installer would have experience with transitioning.

newbostonconst Thanks for your response.

The joint is vertical. The Tridipanel is used in order to create a vaulted shell roof that begins as a vertical wall connecting at a right angle to the ICF wall. They are on the same foundation.
I'll check with an installer.