Roofing contractors don & typically require formal education, however they need on-the-job experience to discover their trade. While each state has various licensing guidelines, the majority of need a roofing contractor to have at least 2 years of experience prior to they can end up being licensed. These specialists also require liability insurance, to be bonded and to possess a business license. HomeAdvisor can help you discover the best roofing contractor for your job. While each state has various licensing guidelines, most require a roof specialist to have at least two years of experience before they can become licensed. These specialists also need liability insurance, to be bonded and to have a business license.