SIP屋顶的Sto-Emerald外套？（低于板块和架空接缝）
在不久的将来，我将在木材之家中建造一个啜饮，并最近在最佳良好做法上做了很多研究，用于密封/包装/涂料啜饮。我有一个建筑公司，这些公司做了重塑和建设的大部分，但我们专注于屋顶。然而，在我的地区中使用啜饮占新房屋的约0.05％（没有许多），所以我几乎没有接触他们。
I know that a cold roof situation with SIPs seems to be the best method, and that you do not want to cover the roof panels with an impermeable layer (like an ice & water membrane). There are many options for roof underlayments, but I am looking for something that I can possibly do that will last 3-4 months in case the weather turns and I cannot get around to installing the roof. The other idea, is trying to reduce air-leakage through the roof panels (same as the walls, of course). Regular underlayments are not meant to be left exposed and are not considered a 100% leak-proof barrier for driving rains. So, the Sto-Emerald coat (which I plan on using for the walls) seems like it should work for the roof panels as well. It will allow internal moisture to still vent out, but keep the rain/snow off it until the roof is ready to go on.
我的问题是：这个lwrb足以在屋顶上使用吗？或者是否应该不使用它的原因？任何想法，见解或以前的经验都非常感谢。
– Nick
GBA Detail Library
由气候和房屋部件组织的一千个建筑细节的集合
答复
缺口，
I don't recommend that you use a liquid-applied WRB like Sto Emerald Coat on a roof unless the manufacturer recommends it for that purpose. (As far as I know, Sto doesn't.)
Building codes require the installation of roofing underlayment, so that's what you should install. (That way, the manufacturer of the roofing underlayment will supply a warranty.)
我知道至少有两种品牌的合成屋顶界面，是（a）蒸气性的，（b）额定6个月的天气暴露。这两个品牌是Permar Permafelt和GAF Deck-Armor。
有关此主题的更多信息，请参阅Synthetic Roofing Underlayments.
- Martin Holladay
马丁，
Thank you for the reply. I have used both products in the past with asphalt shingles. I guess one of the main goals I'm aiming for is to have an air barrier on the roof, but with some permeability. Would taping all of the seams and fasteners on the Deck-Armor be worthwhile (akin to taping Tyvek seams on walls) ?
-缺口
缺口，
As you probably know, it's essential that you tape your SIP seams on the interior.
如果您还要在外观上胶带SIP接缝，请使用像Tescon Vana这样的透气欧洲磁带。这是一个链接：Tescon vana胶带.
- Martin Holladay
I think that once you tape the top (say Siga Wigluv 100) and bottom SIP seams, there would be little more to gain by taping the underlayment. At least once the roof is complete.
The SIP seams are all going to be taped inside and out, regardless of what goes on. From what I understand though, OSB sheathing is not an airtight layer, and coating the walls with the Sto product will create a permeable, but air-sealed layer. This will help reduce the ACH rating, so why stop at the walls if the roof is the same material? Or is a SIP not susceptible to air infiltration the way a traditional framed house is with OSB sheathing?
我只是试图在保持外侧呼吸能力的同时最大限度地赶上所有的空气密封选择。如果用胶带接缝做一个Tyvek层是值得的，或者做一个proSoco或sto lwb，那么为什么要在墙上停下来？
Thank you,
-缺口
缺口，
好的，所以你有内部Sip磁带和外部啜盘。您还在SIP接缝中安装了罐头喷雾泡沫，因为这是大多数SIP制造商都需要的。
And you've installed roofing underlayment (taped or untaped -- your choice) because the roofing underlayment is required by code.
你还想在SIP的外侧传播一些昂贵的Pookie（作为Joe Lstiburek呼叫粘糊糊的物质）吗？别客气。但我认为这是不必要的 - 特别是如果您在屋顶衬垫和屋顶之间包含通风空气渠道。
- Martin Holladay
So you feel that the SIPs, when all sealed with tape, are enough of an airtight barrier? I guess I was under the impression that they needed more sealing to get the most benefit from them. I know it would already be much better than an old fashioned stick-built home that just meets code, but nobody visiting GBA wants to do the minimum. I also realize there is a point of diminishing returns with most anything.
所以也许我只应该把外部包裹“正常”的方式，并将节省放在三釉下的窗户上？
-缺口
缺口，
If you seal the seams with canned spray foam, and if you tape the interior of the seams religiously (including the seams that fall on timbers -- a step which requires advanced planning and head scratching) with high-quality tape, and if you tape the exterior of the seams with vapor-permeable tape from Europe, and if you seal all penetrations well, you'll get an envelope with a very low rate of air leakage.
Air leakage through OSB is irrelevant, because the OSB is glued to rigid foam. The OSB/rigid foam/OSB sandwich is an air barrier, so all you have to worry about are seams and penetrations.
Of course, you need to verify your work with a blower door.
如果您在墙壁上包含通风雨淋差距，以及屋顶下的通风通道至少1.5英寸高，您将避免您在GBA上阅读的SIP灾害。
- Martin Holladay
马丁，
我感谢您的保证，使其简单且使用外部通风将足以使SIP信封持续数十年。吹风机门测试肯定会完成，因为我很好奇，而且因为它现在是完成所需的代码。我的叔叔在旁边建造了一个家的家，我将建造并使用ICF的地下室并贴在楼上的框架。他喷出墙壁和屋顶，很特别。他能够得到一个.6 ach，所以现在我必须尝试击败他的数量！
-缺口