Wind-driven rain is the main external factor causing rainwater infiltration in exterior walls, and there are significant differences in wind-driven rain climate conditions in various regions of China. This study proposes a method for assessing wind-driven rainwater infiltration climate risk that integrates building thermal design zoning, along with a set of corresponding indicators. The risk level of wind-driven rainwater infiltration in the main towns of existing building thermal design zoning was evaluated using these indicators, and a climate zone map for wind-driven rainwater infiltration risk in China was developed. The results show that the severe cold and cold regions are predominantly low-risk, accounting for 80.2% and 95.3%, respectively, with no high-risk towns observed in either region. In contrast, the hot summer and cold winter, hot summer and warm winter, and mild regions exhibit the highest proportions of medium-risk areas, at 68.2%, 66.7%, and 59.1%, respectively. Among these, the hot summer and warm winter region is particularly significant, with a high-risk proportion reaching 25%. These findings emphasize that even if thermal design standards are consistent, differences in waterproofing design requirements for buildings in different regions should also be fully considered.
HUANG et al. (Sun,) studied this question.