About Feldco Roofing Feldco began with one man and one goal when Bernie Feld starting selling windows in Chicago. His aim was to provide Chicago homeowners the very best value and experience with their home improvement projects. Still family owned and operated for almost 50 years, we have become well known for our replacement windows, siding, doors, roofing and our commitment to customer delight. We have been named Window and Door Dealer of the Year and have been recognized for our excellent customer service.