ESG is proud that it has attained multiple certifications from top roofing manufacturers such as GAF and Tamko. In order to keep these certifications, ESG needs to undergo periodic training to stay up-to-date with the latest roofing best practices. This means homeowners who use certified roofing contractors typically qualify for the best warranties, which the roofing manufacturers are willing to strengthen and improve because they have a high level of confidence in their team.