AQUA PATCH was developed and tested extensively over a 10 year period by Maeda Road, one of the largest road contractors in Japan with more than 100 asphalt plants and a sophisticated lab for design and testing of innovative pavement materials and methods. The proprietary product has stood up to the test of time in large and small scale projects, and has proven to be a truly permanent repair solution that performs as well as, or better than, hot mix asphalt – all while being environmentally friendly.