Quality Roofing Makes a Difference TURN TO OUR LOCAL ROOFING CONTRACTOR SERVING WINDSOR, CO Your roof is the largest component of your home and plays a key role in your its integrity. If any part of your roof starts to fail, your whole property could be in danger. Cornerstone Roofing LLC is a licensed roofing contractor serving both home and small business owners throughout Windsor, CO. Whether you have an asphalt or metal roof, our team can handle new roof installations and major storm damage repairs.