防水透汽层隔汽层技术指标及应用场景

Technical indicators and application scenarios of waterproof vapor-permeable layers and vapor barriers

从防水透汽层、隔汽层的作用原理和应用现状出发,通过分析关键性能指标——水蒸气透过性能的含义和要求,根据我国热工设计分区,对不同气候的应用场景提出了具有针对性的防止水汽侵入建筑围护结构内的设计方案,避免水汽对建筑物保温性能和耐久性能造成伤害。

Starting from the functional principles and current application status of waterproof vapor-permeable layers as well as vapor barriers,this paper analyzes the implications and requirements of a key performance indicator-water vapor transmission performance.Based on China's thermal design zoning,targeted design schemes are proposed for different climatic scenarios to prevent water vapor from infiltrating into the building envelope,thus avoiding damage to the insulation and durability of the building.