The author thanks T. Tomiita for his discussion, and the answers are as follows ; (1) In this study, we tried to examine the wall coating on the weatherability and intercepting efficiency against chloride, but not intend to discuss the merits of many wall coatings. (2) So as to select a good wall coating, we need to make clear the factors which effect on the weatherability and intercepting efficiency against chloride, and get a method to estimate the ability of wall coating.
