Unvented metal roof
In the process of construction… currently have a standing seam metal room installed, over synthetic felt, over OSB. No insulation installed yet. There will be ducting and other HVAC equipment in the attic. The plan is to spray open cell foam under the roof deck. This is the recommendation of all three local insulation installers. However, as the future owner, I’m beginning (maybe a bit too late) to read about unvented roofs and I’m wondering if this is really the best option? If it isn’t ideal, are we too late to take another route, given our current progress?
One other question, it appears the eaves, which extend 2.5′, won’t be insulated, not sure if that matters?
We are in climate zone 4.
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