Exterior Walls: so many components, so many materials - will the result really meet the code? NFPA 285 may govern and may limit available choices, so know what triggers the need to comply before the final wall assembly is designed.
When sealants fail, the integrity of the entire building is in jeopardy. Calculate the size ans spacing so joint sealants will accommodate the expected thermal movement. Select joint sealants that are rated to withstand the total joint movement. And test..