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住宅外墙一旦产生结露,不仅因发生霉菌危害了很好的居住环境,而且加速了木制构架的腐朽,有利于白蚁的繁殖。因此可以说,外墙结露是加速建筑老化的重要原因。为此,日本旭化成建材公司研制出全天候防止结露外墙系统“PB墙体系”,不仅在冬季可防结露,在夏季同样可防结露。PB墙体系采用了全天候防止结露材料作为功能板,即将具有隔热、抗透湿性的小型外墙材料“PB表层”与用来防风的“PB薄板”组合起来。1.通风功能这种墙体既具有透湿功能,又通过通风,具有
Once dew condensation occurs on the exterior walls of a house, not only does it cause a very good living environment due to mold, but it also accelerates the decay of the wooden framework and facilitates the reproduction of termites. Therefore, it can be said that external wall condensation is an important reason for accelerating the aging of buildings. To this end, Asahi Kasei Building Materials Co., Ltd. has developed a “PB Wall System” that prevents condensation and the exterior wall system, which not only prevents condensation in the winter but also prevents condensation in the summer. The PB wall system uses all-weather condensation-preventing material as a functional board, that is, a small external wall material “PB surface layer” with heat insulation and moisture permeability is combined with a “PB sheet” used for wind protection. 1. Ventilation function This type of wall has both moisture permeability and ventilation.