Spray Foam Insulation Incident – replace drywall?
Hi, we recently had some old batt insulation replaced with fiberglass blow in (below and above floorboards) in our attic. We’re in Milwaukee. Our contractor used spray foam to do some air sealing, but the spray foam didn’t mix correctly and component B (polyol and tetraflourethane) sprayed onto the back side of the dry wall of our bathroom, and even sprayed through some of the plumbing entrances in the bathroom, which leaked down our wall, shelving and pooled on a shelf in the vanity.
The contractor wiped up what was in the bathroom, but we’re concerned with the health issues of having this liquid which we assume absorbed into our drywall and back side of our shelving on the other side of our bathroom. From what I’ve read, when SPF doesn’t correctly mix and the chemicals don’t cure, this can be a concern. We read the MSDS and it instructs that cleaning must take place in buckets, and of course it doesn’t mention anything about cleaning it from permeable surfaces such as drywall or lumber.
The contractor and manufacturer tried to ensure us that the component that our bathroom was exposed to is safe, and that the other component would have been problematic.
We don’t smell any odors, but we’re still concerned about the uncured chemical and we’re considering having the drywall and shelving replaced. Are we overreacting?
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