嗨，

我正在屋顶在科罗拉多斯普林斯（5区）的家中，与大教堂天花板完全建造，在1:12球场上有2×10椽子。There is no attic (bottom of rafters are sheet rocked and I’m assuming the batt insulation in between the rafters is around an R-27-R30. At some point the modified roof was replaced with EPDM over 1″ of foam. Since then there have been condensation issues. I’m proposing that we remove the existing roof system down to the decking. Re-deck over the soft decking with 7/16″ OSB, installing 4″ ISO board, then 1/4″ Densdeck with a white TPO roof system.
我有两个问题：
1）我正在阅读对蒸汽屏障的需求，我想知道是否在新的OSB和ISO板之间放置了6mil Poly，这将是处理的好方法？I’m also willing to put Ice & Water in its place which would catch any moisture coming off of the TPO and allow it to make its way out to the fascia, but am wondering if that might be over kill or cause other issues with materials interacting negatively.
2）房主对EPDM系统的最大投诉是在扩大和承包时所做的所有噪音。TPO会对这个问题少吗？是否有其他措施来帮助解决这个问题（即安装4×4 ISO而不是4×8？...为每个屋顶平面添加TPO可焊接通风口