Laramie's Oldest Locally Owned Roofing Company. Gem City Roofing has been providing exceptional service to Laramie's and Cheyenne's Residential and Business Community since 1969! We are certified in all systems of quality roofing. - Shingles - Flat Roofs - Single Ply Systems. We are fully licensed, bonded and insured. It is our goal to make your roofing experience as easy for you as possible. We will assist you in all aspects of the roofing process, including inspections, bidding, selection of materials and working with your insurance company. We are here to help you in anyway we can. Our staff is experienced and knowledgeable about all aspects of roofing and they are ready to help. If you are not familiar with our company and your first contact with us is online: We would be pleased to hear from you! Please let us know what your needs and questions are, we will be more than happy to help by providing a Free Estimate for all your roofing needs.