I am giong to start faming the attic into 2 bed rooms. Right now there is no
insulation in the attic besides the sub floor. The insulation in the sub floor
is prob from when the house was built, in the 50's. Ive been lookin into weather
the sub floor needs to be insulated now that im going to finish it off. Ive
heard yes, its better for energy efficiency. Ive heard no, " they only did that
cuz they did not finish the attic when it was built". If there should be
insulation there, then im going to need to replace all of it.
The basic idea is that you want to place insulation between heated/cooled
living space and unheated/cooled empty attic space . The paper or foil side
goes toward the conditioned space .
Some insulation is also rated to insulate sound , you might want to place
some in the floor for that purpose .
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