Health risk of 2×6 wall with 1″ exterior rigid foam, cavity filled, and inteior stud wall strapped with poly membrane?
Hello … I have a quick question on the practicality of the health risk posed by trapping moisture within a 2×6 stud wall cavity. There were condominiums built in our area, 1 which I happened to live in for a few months, that had the exterior walls built in the fashion of having brick (lower units) / stucco (upper units) followed by 1″ of Poly Iso foil faced rigid foam on the exterior with the cavity filled with fiberglass batt-insulation and then they ran plastic sheeting on the interior of this stud wall. When I moved into the condo unit I could fill the fiberglass literally rip into me. We opened the center of the wall up … 12″ gap in the drywall and pulled out the fiberglass batt insulation … which when pulled out was sopping wet … and then proceeded to spray foam the wall cavities with open cell foam. This helped quite a bit but I still couldn’t tolerate living in the building. Is this type of wall construction typical for a 2×6 wall or was this improperly built in regards to building code? The thing is, the rest of the tenants in the building have quite a bit of a parkinson’s shake symptom during the warm summer months, and then their symptoms diminish along with the summer. To me it seems totally improperly built, as it seems to trap the moisture in the wall cavity not allowing it to vent exterior or interior of the wall system. I didn’t know if the state (Illinois) ever regulated such a building code for wall assemblies (this construction dating back to the 80’s I believe), and if the designers of the assemblies are ever held responsible for such assemblies after such a long duration of time …
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