Garage insulation – soffit vented kneewall (no roof/ridge vent)
我试图在互联网上寻找一个精确的场景，由于这个论坛成员的非常彻底的反馈，我一直在这里回来。被说说 - 我很感激你的时间考虑。
我位于哥伦布俄亥俄州。我的房子建于1987年。房子没有用胶合板包裹，而是一块薄薄的泡沫板，铝合金面部（？）（见视频），最近安装了1/4“泡沫的另一层泡沫我们用乙烯基取代了铝壁板。
I do woodworking on the weekends and I’m trying to insulate my garage to make it more tolerable mainly for the winter. I applied the “cut and cobble” or “poor man’s” technique to the left wall (2” foam board with gap filler – pic attached”). I got to the front near the garage door and noticed a huge draft while on my ladder. Part of the drywall on the garage ceiling was falling. So I cut it to see if there was any insulation. There was not! I discovered that this “knee wall” is vented via the soffit, but there is no ridge vent or roof vent. I am going to try and attach a video to assist. Right now the drywall is holding back some of these cold artic winds, but I will likely remove the drywall from the garage ceiling up to where the support beam begins to properly remedy this issue (save money before the professionals arrive).
我的问题 - 我可以只使用泡沫板阻挡拱门（垂直于拱腹），将泡沫板密封在托梁之间，然后将专业涂抹闭孔喷雾泡沫到天花板和膝盖墙上？如果我阻挡了拱门通风口（例如冰灾，霉菌）会有任何负面影响吗？
my main concern is not overlooking something and to ensure the “professionals” I have come out have a sound solution to this. I will likely remove the remaining drywall on the other side of the support beam (directly below my kids bedrooms) as well and have spray foam applied for insulation and sound dampening.
Your time is greatly appreciated!!
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
答复
旧箔面对绝缘几乎肯定是多元化的。如果它是一个非常精细的橙色/黄色/白色泡沫，那么它是什么。您使用的较新的东西看起来像面对IEPS。
如果没有“出来”的空气，那么在那些坐在的通风口进入的空气，那么它不应该是一个问题要覆盖它们。我不能完全讲述你的屋顶通风如何从你发布的照片上工作。屋顶通风工具作为一个系统，带有拱门通风口，提供流入，通常是山脊发泄出来。你的屋顶似乎进入墙壁，这使得发泄更加困难。我通常会推荐将喷射泡沫直接施加到屋顶护套的下面。剪切和鹅卵石在不经过员的屋顶上使用不好，但几乎不可能为长期密封这样的组装。
账单
谢谢比尔！
I’m using your technique above - I drew up a little something for clarification.
将4英寸的闭孔喷雾泡沫直接施加到屋顶护套的下侧吗？你还会将4“申请到”膝墙“
Finally what would be the best method to block the vented soffit? Place foam board perpendicular to the soffit vent (seal between rafters)or parallel (use spray foam to completely fill the soffit cavity). Would a perpendicular approach lead to ice forming above the soffit?
嗨m_g_k（对于GBA问答社区有一个真正的名字） -
键是为您的条件空间获得连续的空气控制层：卧室和车库的新条件空间。我知道你只是希望锻炼你的车库，但你不能“有点”有一个限定这些空间的空中障碍。车库在里面，空气控制层的位置占据了这个空间，否则是它的。
You can install a shed roof ridge vent: see this example:https://dciproducts.com/shed-roof-roof-to-wall/。老实说，我不知道这些工作有多好，但我打赌如果你的棚屋看到任何太阳，那将把空气流缝制到棚屋“山脊”。
我不是说你不能改变单坡屋顶space to a conditioned space and air seal/insulate at the roof line; it's just that if you don't have a good reason to pull that triangular attic of the shed roof into conditioned space, why do it.
彼得
彼得 -
Whoa!!! That link to the vent you provided is amazing!
实施该产品完全解决问题。
我无法妥善表达对您的洞察力以及对该论坛的贡献表示感谢！非常感激！！
Kindly,
Matt K.