What is the best way to retrofit insulation in an unventilated flat roof?
The house has a flat EPDM roof, open chord roof trusses, no ventilation, and R-30 fiberglass batts with dubious installation quality (wiring interrupts, can lights, swamp cooler ducts). I’d like to add insulation to this truss space. I’m wondering if there are any effective solutions that don’t rely on closed cell foam.
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