Roofing contractors wear & normally require official education, however they need on-the-job experience to discover their trade. While each state has various licensing rules, many require a roofing contractor to have at least 2 years of experience before they can end up being certified. These professionals also need liability insurance coverage, to be bonded and to possess a company license. HomeAdvisor can help you find the best roofer for your project. While each state has different licensing rules, many need a roof specialist to have at least two years of experience before they can become licensed. These experts likewise need liability insurance coverage, to be bonded and to have an organization license.