直接作为外墙起围护作用的幕墙。围护性幕墙是指建筑物的某一部分没有围护结构的外墙体，而以幕墙直接作为外墙体。
建筑面积计算
设有围护性幕墙的建筑物，按幕墙主墙外边线计算建筑面积。
装饰性幕墙和幕墙的区别
幕墙的可以理解为建筑物的外部维护墙，如果内侧有保温防水等使用要求的话就需要采用中空玻璃或夹胶玻璃，层间需要做防火等措施。装饰性的幕墙就没有这样的要求了，只是为了遮挡，美观就行，一般采用的玻璃为单玻或是夹胶玻璃，一般也没有层间防火的设施。
延伸阅读：
续约合同
合租住宅
出租信息
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