What is better – roof vents without soffit vents or change to an unvented assembly?
我回到了建筑师并询问了拱门通风后回来了。
We’re designing a home in Southern California (hot dry / mixed dry climate) – the architect is calling for an unconditioned attic, insulation on the attic floor at the ceiling, but fire codes in this wildfire prone part of the world now ban soffit vents of any kind, effectively requiring boxed or sealed eaves. The architect has drawn in a bunch of roof vents that apparently are permitted, but it makes me wonder how effective those can actually be, if they’re halfway up the roof, and they’re not every sixteen inches.
Might we be better switching to an unvented roof assembly? We are already planning on using radiant barrier sheathing on the roof sheathing to reduce the attic temp in summer. Could we put 2 inches of poly-iso foam on the inside of the roof rafters and ditch the vents?
大多数年度，我们只需4-5晚即可冻结。但我知道不想屋顶组件需要设计不累积可以冷凝的水分。
提前致谢。
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
我并不完全确定你的意思是剪切的拱门，但这可能会起作用。因为你说“几乎没有坐下”，这意味着有一些拱底吗？只要您拥有1英寸的最小拱腹和一个面板，您可以安装Cor-a-a-a-a-a-a-a-a-a-ports，如果您愿意或在床站/皇冠模具后面可以直接安装，如果您确实有一个小的拱门。
http://www.cor-a-vent.com/s400.cfm.
他们还制作滴水边缘
It would seem to me that overhangs would be useful in a sunny climate, no matter the pitch.
肖恩，
只要以下条件持有
你的建造者确实仔细工作空气密封天花板。应该通过使用鼓风机门来验证这一点。
2.您在阁楼楼层上有深度绝缘，包括阁楼周长的全深度绝缘 - 一种通常需要凸起脚跟桁架的设计。当然，这种绝缘应该满足最小代码要求，尽管绝缘的上述码级始终更好。
3.您的计划必须可以接受您当地的建筑官员。
谢谢马丁。阁楼/天花板将是R38，所以我真的只是试图弄清楚我们如何让阁楼本身比外部空气更热），因为它将通过它贯穿它，它将用于存储，所以我将用于存储不要想要在那里煮熟的东西。
肖恩，
如果您正在炎热的气候设计新家，您为什么打算将管道放在无条件的阁楼？听起来你需要一个新的建筑师。
这是标准的做法,只要the ducts are R8, it complies with California's energy efficency requirements. The primary argument made by the architect and the builders we've interviewed is that the modest loss of cooling by running ducts through the attic is less than the additional load that conditioning all that air within the attic would impose.
肖恩，
在这个国家的历史中有一个时间，当你可以拥有奴隶而不经营当前和地方道德标准。
I have to ask: is a Cape Cod a climate-appropriate format for a home in Southern California?