The typical cost of attic insulation is between $1,500 and $3,500, with a national average of $2,500. Cost factors for attic insulation installation include attic size, insulation type, insulation ...

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Although foam core insulation was a popular choice in the past, foam core made of extruded polystyrene insulation (XPS) is being traded out for more eco-friendly options. Over the decades, new types ...