答复

1. GBA Editor
   Brian Pontolilo|Jan 27, 2020 10:44am|#1

   Hi Giovanni.

   只是为了清晰，没有护套或屋顶界定。那是对的吗？

   1x4s垂直于椽子运行。那是对的吗？

1. 
   CZ 4A_GIOVANNI S.|Jan 28, 2020 12:17am|#2

   是的，就是这种情况。perpindicular。

1. GBA Editor
   Brian Pontolilo|1月28日，2020年11:38 AM|#3

   I'm always reluctant to say to much about atypical buildings in design, construction, and use. But if you treat this like a vented, insulated cathedral ceiling, you could use some of the rigid foam to make vent baffles between the rafters, then fill the cavity with fibrous insulation for R-value, then use more rigid foam, continuous along the underside of the rafters to mitigate thermal bridging.

   In this arrangement and your climate and given the high-humidity activities you plan to do in the workshop, I think you'd want to make the ventilation baffles from the most vapor-permeable material you can, maybe EPS foam, and use the more vapor-closed rigid foam for the continuous insulation. In this way, you'll have a warm-side vapor retarder and an assembly that dries to the outside.

   您应该做一个无可挑剔的作业空气，密封装配的内侧。您可以用填缝，密封胶和胶带安装连续的刚性泡沫空气。如果您不安装连续内部刚性泡沫，请在舌头和槽顶板上安装气密干墙式天花板（镶板不会空气紧密）。在这些活动期间，使用除湿器或减压建筑物的湿度（您可以简单地将盒子风扇放在窗户中，例如在罐头期间吹风。

   再次，因为这不是一个常见的情况，我对这种方法并不是积极的，希望如果任何其他的gbaers都有像你的建筑物/用途的经验，他们会颂扬。

1. 
   CZ 4A_GIOVANNI S.|Jan 28, 2020 12:43pm|#4

   Brian,
   thanx much for your insights, on helping me think through this. Totally understand your initial reluctantcy, but any and all insights will help me think through the various options.
   Been a huge fan of the siga sicrall tape, and likely will use it for air sealing in this scenario.
   Any more thoughts, confirmations, etc. would be great as ya'll have time. many thx
   Giovanni

2. 
   CZ 4A_GIOVANNI S.|1月28日，2020年01:12 PM|#5

   Btw, say i obtain the EPS board foam, to dry to the outside, is a thinner piece advisable, say a 1 in verses a 2 in of the EPS, (since the thickness can affect density, and thus permeability/or permeance...before i layer a fibrous insulation for example...)
   或者换句话说，更简单地......夹层层的比例应该是较高的渗透率，以最低的最低渗透性？如果我基本上在内部椽子内有5英寸......在空中通道之后......说，也许是2.0英寸的材料，具有最高渗透性面向向外的，其余3.0英寸内部最少的内部内部？或者更像1到4英寸的比例......类似地工作？
   ( i do realize i am limited in making this a VERY cosy place, due to lower R-levels in gen). My idea is do my best to seal internally while preventing trapped moisture from foolish decisions on my part).

1. GBA Editor
   Brian Pontolilo|Jan 28, 2020 03:32pm|#7

   You are correct that the thicker the rigid foam the less permeable. In the case of the site-made ventilation baffles, use as thin of material as you can that won't deform. Seal it in place with caulk, sealant, canned spray foam, and/or tape. This way you will promote proper ventilation and maximize drying potential.

2. 
   沃尔特Ahlgrim|Jan 28, 2020 01:53pm|#6

   Of course you will cover the foam with something with a 1 hour fire rating as require by code? If for any reason there will be no inspection making you cover the foam, I say you would be crazy not to as the fire rating will give you the time needed to escape before the fumes from burning foam kill you.

   请务必找到并阅读Martin关于如何隔离杆谷仓的文章。

   In my opinion every cent you saved and more by building a barn will be spent in a failed effort to make it be a high performance house.

   Walta

1. GBA Editor
   Brian Pontolilo|Jan 28, 2020 03:33pm|#8

   Here is the article on how to insulate a Pole Barn:如何隔离杆谷仓

3. 
   CZ 4A_GIOVANNI S.|1月28日，2020 05:29 PM|#9

   Brian，Yup，看过一些各种谷仓文章。良好的指导。我怀疑自从我的情况有点略有不同的条件，而且我认为这种理想的材料......（渗透率范围......）特别是在4A中，我无法确定必然是一个理想的行动方式。（我有点太细节导向，但不一定是完美主义者）。不同的观点帮助。

4. 
   CZ 4A_GIOVANNI S.|Jan 29, 2020 06:10pm|#10

   Any more tips or suggestions from the Pro's?