将步入式地下室弥补的最佳方法是什么？
我需要专家对我当前和未来的游戏计划的意见，即纽约州北部第6区，1968年的后分割翻新。
Q1：我可以安全地添加4英寸的外部多ISO，因为我已经在墙壁的内部已经有3英寸的闭路牢房？
Q2：如何改进该计划？
See plan details below.
谢谢
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My first project will be to insulate and finish the lower level (41ft X 12ft). Two sides of the space are partially exposed (between 1.5 to 3.5 feet below grade). Third wall faces a semi-conditioned garage.The fourth wall backs up to a ventilated dirt floor crawl space. All walls are block (~4ft) and 2×4 framing (~4ft + 12″ joist space for 2nd floor).
My Plan:
[Stage 1]
爬行空间 - 隔离两个外墙 +墙壁面向车库，带有3英寸闭孔喷雾泡沫。拆除高架地板托梁之间的通风和现有的隔热材料。面向较低级别的墙将无隔离。
另外，在地板上安装6磨机。最终，Poly将被混凝土地板增强。
下层 - 使用2x4s所有外部砌块壁（两侧）。
The third wall facing garage is already 2X6. Fourth wall facing crawl space will be left uninsulated.
将所有三个墙壁用3英寸的闭孔隔离。
Insulate concrete floor with 1″ rigid foam + plywood & finished floor.
Rear cantiliever (1.5ft x 71ft) will be opened and insualted with 4″ of closed cell
[Stage 2]
房屋的未来计划包括在包括较低层的建筑物外部增加2层2英寸Polyiso。这也将涉及用纤维水泥或重用现有的雪松壁板固定嘴。
GBA Detail Library
由气候和房屋部分组织的一千个建筑细节的集合
答复
Q1: "Can I safely add 4 inches of exterior polyiso, since I will already have 3 inches of closed cell on the interior of the wall?"
答：是的。通常要安装混凝土墙的两侧；这就是设计隔热混凝土形式（ICF）的方式。
问2：“我该如何改进这个计划？”
A. That's a fairly general question. Any plan can be improved. For example, you could include more than 1 inch of rigid foam above your existing concrete floor.
感谢您的回复。关于将Polyiso添加到墙壁的块部分中，我不太担心该部分。我担心的是上面的木材框架/薄板的4英尺。
假设我用3英寸的闭孔密封木墙的内部腔，您是否预见到在外部添加4英寸Polyiso的任何问题？我相信我们通常希望墙壁能够干燥到一侧或另一个。我是为自己创造问题吗？
谢谢
PS: Re: the floor isulation. I only have 8feet of head room from the existing concrete floor to the bottom of the 2nd floor beams. With double 5/8 sheetrock (for sound proofing) + 1inch of rigid isulation + finished flooring, I am very close to my minimum 7'9" headroom. Is there a good way to warm the floor with less insulation? possibly more effective than the R5 rigid insulation?
阿尔温，
如果要在木框墙壁上安装刚性泡沫，请选择要在哪个侧面安装它，但不要在两侧安装它。您希望墙壁腔至少能够朝着一个方向干燥。
Would it be best to allow drying to the outside? Given that the rest of the basement will be covered with exterior foam perhaps the above ground portion should be allowed to dry to the outside. In a past article or discussion on this site I believe it was said that the path for much of the moisture in a basement wall is through the top of the cement wall. Is this correct?
杰西，
再次，我很困惑。您是在谈论混凝土墙的地上部分，还是在谈论木结构墙？
如果您的某些混凝土墙用刚性泡沫绝缘在外部，则全部您的混凝土墙应用刚性泡沫在外部隔热。如果您停止隔热水平的绝缘材料，那几乎根本没有任何好处 - 因为混凝土墙将因混凝土墙的裸露部分而失去大量的热量。
我说的是地下室墙壁上的上述牙齿框架部分。
杰西，
在木框墙上，刚性泡沫的最佳位置肯定在外部，而不是内部。这样一来，泡沫将使您的螺柱托架保持温暖，并减少在护套和螺柱中积聚水分的机会。
First, you can't insulate the exterior below grade with polyiso- it is hygroscopic and will slowly saturate if buried. You CAN insulate the interior with poly iso.
如果您在螺柱舱中有3英寸的2磅泡沫中的3英寸，您仍然可以在外部使用Poly ISO，但是您必须对所用的面孔进行选择性。请勿使用箔纸面对面的商品，但是有许多隔离的纸张或玻璃纤维面孔。那里只能提供0.5-1的干燥能力 @ 1层，这是可以的。已发布的规格通常是一个有点柔软的“ <1 perm”，但这很好。不要加倍。CC泡沫约为0.3-0.4 perms，除非您使用高渗透/低-R吹出的生气环烯，否则将运行约1.3 perms @ 3“/r15。而R18-R20和R15之间的差异可能听起来像很多，框架的热桥以甚至20％的框架分数（低于平均水平），这仍然是整壁R1的差异。如果我的房子我会在腔体和腔体中敞开的细胞泡沫将钱花在胖乎乎的外部ISO上，您至少可以从中获得全r。
If the 2lb foam is already in and you're concerned about the iso facers being too vapor retardent, 4" of unfaced EPS would still be running about 1-perm. And at the low-temperature extremes in zone 6 the 4" EPS would be performing at about R18, to the iso's R22 (at that temperature and thickness), since EPS gains R with lower average temp, and iso gives up some. At warmer temps the difference in performance between the two would be more pronounced.