Posted By CleanBuilding1975 on 16 May 2022 08:43 PM
Inner walls do serve purpose in SIPS as they are using EPS to construct. Therefore any area that is using EPS that can be closed off will hold insulation value including the roof.
an un-needed expense, interior walls are best accomplished with studs for future wiring access, plumbing stack locations and standard door jambs , anyone that says otherwise lacks construction experience and knowledge