Opinions on This Wall Assembly
I am currently working on a project in Zone 6 with a wall assembly I am unfamiliar with. The wall is designed with 1/2” Zip sheathing as the interior vapor barrier taped with Siga, the green WRB facing the insulation at the interior of the wall. There is a 11.75” space filled with dense pack cellulose before contacting the exterior sheathing which is 5/8” Zip taped with its proprietary tape.
Is there the possibility of moisture getting trapped in this wall system due to the low permeability of the Zip panels. I am understanding they are around 2 perms.
I would opt for using Intello as the vapor barrier but that is not an option. Would like to get some thoughts from others on this assembly.
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