I’m working on my first floor “staple up” hydronic job. I’m using thermofin C plates. They recommend a 5/8” air gap between the plate and the insulation.
the question is, with an old house. Is approximating this with batt and insulation the best way to get the air gap and achieve desired level of insulation?
too big of an air gap degrades performance of the floor heat and is less insulation.
after I get the floor heat + new electrical done I’m going to air seal before I insulate and use an intello or equiv vapor open product to air seal again then put up the drywall ceilings.
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