 Homeowners can get 30% of the cost of the insulation back as a tax credit. To get a quote on attic insulation or any roof questions, call 434-3020 or go to ExcelRoofing.com. At Excel, you don't pay a cent until you're content. 719-434-3020. ExcelRoofing.com. Excel Roofing. We're on top of it.