Roofer put on & normally need official education, but they require on-the-job experience to learn their trade. While each state has various licensing guidelines, the majority of require a roofer to have at least two years of experience before they can become certified. These experts likewise need liability insurance, to be bonded and to have a company license. HomeAdvisor can help you find the right roofer for your job. While each state has different licensing rules, a lot of need a roofing contractor to have at least 2 years of experience prior to they can become certified. These professionals also require liability insurance coverage, to be bonded and to have a business license.