没有气体或烟雾的平坦屋顶
Hi;
我正在翻新位于拉古纳海滩（Laguna Beach）的房屋，并重做屋顶以及大多数房屋的房屋。我对化学物质非常敏感，工程师呼吁以下内容：
1. ply
2. 4” High Density Rigid Insulation Foam
3. CDX纸
4. Mule Hide roof system
I am wondering if you have any suggestions about how to create a gas/vapor barrier so that when the roof heats, I am not exposed to fumes/gasses from the materials. The inside will be finished with 1/2” drywall board.
Thanks!
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Replies
嗨，金伯利，
请定义：“ m子隐藏屋顶系统”
Why not go with a fully adhered membrane that could reside on polyiso fiber glass faced panels,
这是相当渗透的和水性粘合剂（加热时减少不需要的化学物质）
I am no expert on the subject, but a poly sheet usually blocks alot of diff. chemicals and gazes.
Kimberly,
Every roof needs an air barrier. If your roof is properly constructed, you won't have to worry about vapors flowing downward.
You mention that the lower layer of roof sheathing is "ply" -- which I assume means plywood -- while the upper layer of roof sheathing is "CDX" -- which also means plywood. Are these two different layers both plywood?
If you want your lower layer of plywood to be airtight -- and that's a good strategy -- you should tape the seams of the plywood with a high quality tape like Siga Wigluv.
If airtightness is very important to you -- and it sounds like it is -- you can install a roofing underlayment with taped seams (for example, Solitex Mento, a product that can be purchased from475高性能建筑物供应) directly above the lower layer of taped plywood.
快速的第二个想法可能是在绝缘层之间用“通风”的空间建造屋顶，
other more knowledgeable on that might chime in ...or your engineer/situation might not agree to that added complexity.
Jin,
我不确定您打算在哪里包括通风空间。您建议通风空间位于“隔热之间”。我不确定这是什么意思。
One thing is for sure: you don't want a vented space between the insulation and the interior of the building, or the insulation becomes worthless.
I'm not sure how 4" of any rigid foam meets Title 24 R-value requirements, even in temperate Laguna Beach? A high density polyurethane might come in at R27-ish, whereas IRC 2012 code min for US climate zone 3 is R38. Even though the R27 is continuous, not thermally bridged by rafters, it would need to be R30-ish to hit the same performance level as R38 between joists.
相反，如果您跳过了刚性泡沫并在24英寸O.C. 2x8 afters之间安装了R30岩羊毛，并将箔纸面对的polyiso放在ule子皮下方，它将击中Code Min，您将至少有一个Foile Foil Etherer在您和任何合成聚合物材料之间，以将气体扩散速率限制为几个数量级。然后，这是您多么容易受到木材产品的侵蚀。摇滚羊毛实际上没有任何东西，因为它是在极高的温度下制造的，它可以驱动/燃烧任何挥发性组件。
ahhaha我错过了一个字
i meant in between the insulation and the roof finish of course ...
In my opinion, Dana is giving excellent advice using mineral wool.
From the vast research I performed over the last 3 years regarding foam insulation products, chemically sensitive people should not use foam, period.
理查德：哪个泡沫？
泡沫可能是很多事情...可能都有非常不同的行为...
please Richard share your research info with us!!
DANA：在某个百分比中，岩盘在中/低温度下使用粘合剂，以保持纤维TOGEHTER。
ANyone would care to explain the " mule-hide" roofing ?
all i get is a company with the same name selling many different types of roofing materials...
mule皮确实只是一家制造EPDM，TPO和PVC膜屋顶系统（以及其他一些类型的屋面）的公司的商品名称。目前尚不清楚Kimberly的建筑师指定哪个版本，但如果我不得不猜测这可能是TPO（热塑性烯烃），因为她在CA南部，代码需要“凉爽的屋顶”材料。未经治疗的未经球的TPO是白色的，具有天然高的太阳反射索引，可以符合边缘的代码，但可能是PVC。使用EPDM，您必须指定太阳能反射涂层才能满足代码。
用于岩石羊毛泡沫制品的粘合剂最少，而且挥发性的幅度不是它们用来防止吹岩羊毛的油的挥发性。如果瓦特的热量足以以显着的速度将粘合剂煮成气体，则意味着屋顶被完全吞没在火焰中。然后，您将面临比粘合剂更直接和急切的问题。
您可能可以在2x8 rafter的场景中使用1.5英寸刚性岩羊毛，而不是在屋顶甲板上方的polyiso，但我不确定这些东西在膜屋顶下会如何“步行”。它将具有很大的优势在那一层中少了，但不会有箔纸面来防止膜屋顶的排放。
Dana's the wizard! Great advice!
好的
我仍然不明白在膜下使用常规ISO或EPS会有什么问题？
Last time i checked, EPS boards under a HD recover ( 0.5" polyiso between 2 FG coatings )
在黑色EPDM下，甚至没有变暖...为什么与白膜一起使用，为什么会发出任何气体？
简单的聚块不会流出气体？
Please enlighten me, as i do not see how the roofing boards could emit anything toward the interior space...