Structural Insulated Panel Systems (SIPS) are prefabricated building panels consisting of plastic foam cores sandwiched between two skins, typically oriented strand board (OSB) or plywood. For the record, I like them. They are a good panel system. So, do not take the comments that are coming as Joe being negative Jo …. I just want folks to stay out of trouble. We have been here before (BSI-036: Complex Three Dimensional Airflow Networks, February 2010) … twice (BSI-088: Venting Vapor, July 2015). Apparently, folks have not been paying attention. Bad stuff keeps happening to good panels. Back then, 10 and 20 years ago, SIPS were not all that popular and so not a lot of problems because there were not a lot of assemblies. Guess what, SIPS are getting popular. That part I like. Unfortunately, folks are not paying enough attention to stay out of trouble.
