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Can you do damage by over insulating an attic. I live in chicago, which calls for R-49 in attic. Due to the combination of bundles I will in up with R-55 in attic. Will this cause any damage? :D
Only to your utility bills.
There is no such thing as "too much inslation", as long as you don't interfere with ventilation.
There just comes a point where the payback isn't worth the cost of adding more insulation.
Okay thanks Dave, Up into the attic I go.