金属屋顶冷凝，绝缘和蒸气屏障

Condensation can occur within a金属屋顶系统并引起腐蚀或霉菌。幸运的是，如果在损害发生之前解决了问题，则可以轻松且具有成本效益地解决冷凝水。因此，讨论凝结的最佳时间是在初始屋顶设计期间与您的建筑师或承包商一起考虑更换屋顶。

Not sure what condensation is or how to stop it? Let us start with the basics.

What is Condensation?

If you’ve ever sat outside on a hot summer day with a glass of iced tea and watched as the outside of your glass grew moist and then a puddle formed, you’ve experienced condensation.

凝结背后的科学并不过于复杂。当温暖的潮湿空气与冷表面接触时，空气到达冷表附近的温度，空气无法再保持水分。当温暖的空气无法再保留水分时，水分会沉积在凉爽的表面上。

同样的原则适用于您的房屋。当您的房屋内部的空气比外面的空气温暖，并且屋顶系统没有正确通风，可能会发生冷凝水。

为什么金属屋顶凝结是一个问题？

If condensation occurs inside a roof system, it may not be able to evaporate quickly enough before it begins to cause damage. This damage could be in the form of either premature corrosion or mold.

How Do You Control Condensation? Insulation and a Vapor Barrier

To control condensation it's important to properly ventilate and/or insulate your roofing system. Areas like attic spaces and gaps between the ceiling and roof deck (or plywood) are common areas of focus.

If insulating, a vapor barrier should be applied on the warm side to prevent warm moist air from penetrating and coming in contact with the cold surface. Then the entire space should be filled with insulation. If ventilating, the system should be designed to allow proper air-flow to remove the warm moist air from inside the space. This can be accomplished through soffit and ridge vents. The ridge vents may be powered vents or they may not, depending on the number of air changes needed.

你应该担心吗？

Yes, you should be concerned about condensation because when unresolved, condensation can wreak havoc on your roof system and even cause damage to your interior space.

However, when addressed early the fixes are relatively easy, inexpensive and can even help reduce heating and cooling costs. The best way to stop condensation is to prevent it during the design phase of your roofing project.

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联系我们for expert help or use or our locator tofind a McElroy Metal Distributor or Contractor near you。一定要检查我们的关于住宅金属屋顶的常见问题解答。