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My basement maintains a temp of 56' +/- during the winter (RI). Prior to the installation of a high efficiency furnace , the basement maintained a temp of 62 +/-.
I am trying to determine if I should insulate the band joist area above the foundation. I would use rigid insulation sealed with spray foam from a can.
Do you think the temp would rise to offset the cost and effort?
The basement footprint is 24' x 50'.