Would the condensation be explained by the lack of insulation?
We own a 3 unit building in Chicago built in mid 2000s. Last fall we put on a new warm roof with vapor barrier on top of main roof decking but below the new insulation (insulation on outside) but did not insulate rim joist from ceiling below. We noticed strong odor in unit.
We opened the interior walls of 3rd floor in August and noticed condensation on the walls and rim joist. We read your article on insulating rim joist and NOW plan on doing this using closed cell foam.
The interior walls has only R-12 Owens insulation with a plastic vapor barrier. We are wanting to also spray foam these walls with closed cell foam.
Would the condensation be explained by the lack of insulation? And would insulating the interior side walls with closed cell foam address the condensation within walls and ceiling rim joist?
I am also assuming the plastic vapor barrier on walls is a bad idea?
Building is constructed of exterior brick with cinder block on the inside. Is it OK to still have insulation within the closed ceiling cavity below new roof? Thanks.
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