In connection with a rise of the global environment of these days and concern about extension of life span, examination of repair coating specification which considered reduction of VOC in coating systems of Tokyo Tower has been needed. In order to consider future VOC reduction, test construction of the water paint system, and continuous evaluation has been carried out over in 2006. This report the circumstances which selected the future repair coating system based on the evaluation result of the construction nature of a water paint system, and durability which performed test construction.
