你好
我住在冬季气候寒冷的密歇根中部。我正在密封从2楼天花板到阁楼空间的所有透气口。我还把现有的两个风扇通风口通到屋顶。之后，我想在现有的绝缘材料上添加纤维素绝缘材料。我目前有大约6英寸深的松散填充绝缘。我有潮湿的问题在过去，我有几个斑点的霉菌显示在我的屋顶护套的底部。这就是为什么我要做这个升级，希望解决我的阁楼潮湿问题。我的屋顶间距是3/12，所以阁楼空间间隙很小。我想知道我是否可以在现有的绝缘材料上加入纤维素绝缘材料?或者是一个更好的主意，去掉所有现有的绝缘材料，然后添加一个蒸汽屏障，然后在蒸汽屏障的顶部吹入所有新的绝缘材料? The space is so tight in the attic at the eaves that I think my only option is for the attic insulation to touch the bottom of roof ply. I have no soffits or overhangs. I’m confident that I have good attic ventilation. My home was built in 1970. I moved in 2014 and I plan to live here forever so I am trying to make the proper upgrades. There is many issues with this house. Any guidance offered would greatly be appreciated. Thank you