Having sufficient knowledge about the role of statistics in engineering helps the managers to control the system appropriately, minimize the costs and increase the productivity. Studies indicate that different quality improvement techniques implemented in recent years did not work properly in some cases due to the unwise application of statistics. Taguchi-based Six Sigma method is a newly introduced method that has borrowed strengths of Taguchi and Six Sigma to provide a more applicable tool for industries, construction works and service centers. It is the optimal setting combined of two-quality improvement techniques, which can be significantly effective in reducing the variation and defects of a manufacturing or producing process. This study aimed to test and evaluate the effectiveness of this new quality improvement model in optimizing the production process of a green construction material. Results of implementing indicated a significant progress about 50% in process performance that verify the effectiveness of Taguchi-based Six Sigma method on variation reduction and quality improvement.