To help you easily identify products that have less impact on the environment, the Diversified Brands Division of The Sherwin-Williams Company developed the GreenCert™ manufacturer's designation. Our GreenCert™ designated products include interior and exterior paints, caulks, brushes and rollers. These high quality products carry the GreenCert designation because they offer both maximum performance and feature a specific environmental benefit, such as paints and caulks that meet strict VOC requirements.