Guy down the street did it himself. He did it in the summer. Because of the heat in the attic, he also unhooked one of the air conditioning ducts and blew it into the attic. He checked the temp in the attic before and after, lowering it by 20 degrees. He did get SECO to give him an estimate and I think it was $2500. So if you save $20 a month, that is over 10 years to recoup. Doing it yourself costs about $800 plus your labor. You would recoup in about a third of the time. 10 years to long, attic to hot for DIY.
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