Air-Sealing Between Unconditioned Basement and First Floor
Zone 5 Eastern MA. First floor sub-floor is a collection of Advantech patched with old gapped board planks. Air leak city. Basement rat-slab and rubble walls are essentially not insulated. Plan is to leave them be for now.
Town will require insulation in the basement ceiling. I’m thinking an air barrier at the sub-floor will further help with heat loss to the basement? Overkill? Thanks
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