Polyiso完成到年级？
Climate zone 6a, new home, pretty good house.
在我家的前面，我有一个薄的岩石饰板，计划从等级到达的阶级，我想象的是大约48英寸的等级。
I have thought about the rock veneer and the problems with moisture in a 2×6 framed wall with 3″ of exterior fiber faced polyiso. My wall assembly for the rock area from inside to outside is Class III vapor paint > sheet rock > 2×6 wall > bibs cavity insulation > sheathing > 3″ fiber faced polyiso > house wrap > dimple matt drainage > fabric > lathe > stone.
石头将一直到达等级。等级将是3件物品，沥青，土壤和混凝土庭院。目前，安装人员已经将Polyiso带到了大约.25“或许.5”以上等级。我担心多自然的开放未完成的边缘湿润吸收水分。我可以做？
附加的图片显示了3个不同的位置。混凝土尚未倾注，因为您可以看到砾石。砾石需要降低，因为混凝土不会超过聚异构。
What do you think. Do I need to have them stop the polyiso 6″ above grade and then fill the 6″ with EPS or something else?
Thanks,
史蒂夫
GBA详细资料库
由气候和房屋部件组织的一千个建筑细节的集合
Replies
嗨史蒂夫，
听起来你有一个聪明的墙组装计划。I think you are right to be concerned with the polyiso so close to grade. Even when used on basement walls inside, builders tend to hold polyiso up from the slab to reduce the risk of it getting wet, and it has more potential to get wet in your exterior situation. Perhaps a transition to another rigid foam type a bit higher on the wall would be a good idea.
布莱恩，
My wall assembly has be refined due to countless hours on here and the experts here provide valuable feedback so I'm glad you like the plan.
With respect to the Polyiso what are the implications if it does get wet? Does it degrade locally? Will the water wick to other parts of the polyiso?
你可以在Polyiso已经弄湿的图片中看到。
当它被房屋包装覆盖时，多自可能会潮湿的机会是什么时候湿透的灰泥垫片将粘上石头的砂浆将一直到达级别并填补聚四世和等级之间的差距？
目前，Polyiso落在了大约6英寸的基础墙上到了级别。我在想我应该让他们停止大约5“以上的5英寸，然后切换到3”eps降到等级。
史蒂夫
嗨史蒂夫。
我听到了很多关于多肌气如何抑制润湿的混合思想。如果你在不同的情况下安装它，我可能会感到不同，但是因为你将它安装在石板上，你可能不知道很长一段时间是如何举起的，那么它似乎值得采取谨慎的方法。其他人可能不同意，但如果是我的房子，我会做一些像你的建议，从等级开始至少几英寸的eps切换到eps。
还有其他人是否有数据如何在我的情况下抑制和潮湿的影响是什么？
如果我要剪掉5英寸的Polyiso，就在等级上方，用EPS替换它我不确定如何附加EPS。我想它必须粘在基础墙上。
史蒂夫
If the dimple matt drainage sheet is a vapor barrier (most are) the polyiso is never going to "see" the intense moisture drive from the masonry veneer. As long as there is at least some guaranteed air space between the polyiso and soil it won't/can't wick ground moisture. Even if it's only 0.25-0.5" of air it's a GREAT capillary break.
随着时间的推移，它的性能的关键是让它摆脱可能导致它粉体湿度的碎片。
Sealing the cut bottom edges with an overlap of EPDM flashing tape would offer a good capillary break even at 0" clearance. That would easier to do if it were implemented while installing the polyiso. But there may be sufficient room to retrofit the tape after digging down the gravel. Be sure to properly lap the housewrap over the EPDM.
If you need to keep the bottom edge of the polyiso close to the ground and plan to put a strip of something else below it for protection, I’d cut the bottom of the polyiso at a bit of an angle, then cut the top of the lower “protection” insulation at a similar angle arrange so that the slope will drain the gap towards the outside of the wall. This way you minimize the chances of water getting trapped in the gap. You don’t want the polyiso sitting in a puddle.
在我的经验中，结构外部的任何差距都倾向于积累树木碎片和昆虫巢。这件事都在一起努力陷阱水分，所以我对你最终做的任何事情都是为了确保它无法用湿润碎片插入，并确保有排水路径。由于这个问题，我不喜欢外部差距和平坦的内边缘。
账单