Hello all… I’m an inspector in North Central Florida and I just did an inspection of a small, 540 sq ft cottage style home that had an unvented/sealed attic with closed cell spray foam insulation. The living space had 2 mini-split units inside. That’s it. No fresh air return/circulation.
My understanding of the current code is that unvented attics are okay, as long as the sealed attic is also part of the thermal envelope of the home. Meaning, there is still some “circulation” as long as there’s either a conditioned attic space with a min-split unit, passive air openings in the ceiling, an ERV, or vents from a forced air system. I expressed this to the realtor who responded back to me stating he “checked” with the contractor and declared “it’s fine”. I reported that it needed to have some sort of “ventilation or conditioning” due to the potential for buildup of moisture.
Am I wrong in my recommendation?