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Question:

Attic insulation amount and cost?

How much/many inches deep is recommended for an attic, and what is a typical cost per square foot of attic space-i am talking about the blown-in kindany tips or things to look for would be appreciated!!!

Answer:

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USA How much required depends on where you liveThe building code divides the country into 5 areas; each having different requirementsThe rule is, the higher the R value, the betterNew homes in PA are required to have a minimum R38 in the atticSome of the colder areas require R49Insulation is based on R value, not thicknessThere are several different materials used for insulation; each material type has a different R valueBatt fiberglass insulation 10-1/4 inch thick has an R value around 38Blown in cellulose insulation has an R value of about 40 at 10 or 12 inches thickI would insulate my attic to a minimum R50 if possibleThat will help keep the house warm in winter and cool in summerThe walls should also be insulated, minimum R19I know of new homes over 6000 square feet that have a heating bill of $250 per month, because they are so well insulatedInsulation works, and pays for itself.

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