The Champion Window, Sunroom, Siding and Roofing Showroom has the products and expertise you need for all your replacement projects in the Madison, Cottage Grove, Middleton, Fitchburg, Verona, Waunakee, and Janesville areas. Stop by to see and experience our large variety of energy-efficient replacement windows, patio and entry doors, sunrooms and vinyl siding or we can come to you for a free, no-pressure in-home consultation.