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Originally Posted by villagetinker
Probably not worth the cost. Contact your electric supplier, most have free energy audits, and they can tell you if this would be a wise move. IMHO, unless your home is fairly old and the insulation has compacted, I do not think you will get much savings from the additional insulation.
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Probably correct in terms of electricity cost savings. You can buy enough blown-in insulation to add 6 inches (R19) to a 1500SF space for about $700 from Home Depot or Lowes. You can also rent a machine and install it yourself. But, if I could get it done for about $1000 or so, including materials and labor, I wouldn't do it myself. You will save some energy and possibly notice a quieter and more comfortable house, and may get a $50 tax credit. To me, this project makes a lot more sense than some of the weird ideas I have read about on this website.