如何发泄和隔离四坡屋顶阁楼的生活吗space?
任何人都可以将我推荐给“底漆”，了解如何最好的通风口，并使屋顶阁楼室的“拱形”天花板上限？我有三个主要问题：通风屋顶，绝缘型和蒸汽屏障。
I’m turning an unconditioned attic into livable space, as a part of a complete cottage remodel (strip interior to studs and start over). The roof I’m working with is long-hipped (longer than wide), with a ridge along the center. There will be kneewalls and built-in closets/drawers.
这个小型小屋（22'x33'）的改造已经包括在一个狭窄的末端安装一个“狗屋”天窗，以及一侧从脊的全长延伸的棚屋。屋顶已被重新落下（暗沥青瓦片），沿着狗屋天窗和11英尺长的中央山脊安装脊通风口。
外壳可以从内侧提供（暴露的铆钉），但不是外部。在阁楼的外部信封上，在屋顶倾斜开始之前，大约一英尺的垂直墙。最高峰值距离超过7'。唉，目前屋顶椽子和岭椽只有6“深（外墙螺柱只有4”深！）。这栋房屋位于Midcoast Maine：长寒冷的冬季，大量的雪，经常立即达到雨雨。
首先，我如何最好地排出臀部的山脊？I’m guessing one should install attic rafter vent spacers along each inter-rafter space, from the vented soffit up to the hip ridge, then drill vent holes at the tops of those rafters (if so, how big?), at the top end near where they meet the hip ridge, to vent up the angled ridge to the center ridge and its vent space. Very scary idea, though: wouldn’t those vent holes compromise the structural integrity of the roof?
接下来，重新。绝缘选择。Alas I am reticent to use spray foam because a) roof shingle/sheathing failures escape notice and can permit extensive rot, and b) I’m passionate about recycling and hate the idea that a foam-sprayed roof, upon its ultimate future demolition, must become landfill fodder rather than wood (chippable, burnable BTU’s) plus insulation. So, what is the best insulation choice? Cellulose blown between the rafters?
提前感谢您的建议或推荐。
Anita
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
阿妮塔，
1. Consult an engineer to be sure that your rafters aren't undersized.
决定如何发泄和绝缘屋顶有点迟到。理想情况下，在安装瓦片之前已经做出了该决定，因为壳体中最好的解决方案将在现有屋顶护套顶部的外部刚性泡沫。
3. Your rafters aren't deep enough for ventilation channels plus insulation, and your ceiling height is so low that you can't build down.
4. Hipped roofs are hard to vent, so an unvented roof would be best in your case.
5.壳体中最好的解决方案是闭孔喷雾聚氨酯泡沫，有两个原因：（a）它不需要通风，并且（b）它具有每英寸高的R值。
谢谢，马丁。我的约束是有问题的！
由于夏季热负荷导致，在护套上喷出的屋顶是否与护套喷射脱落，寿命较短？
阿妮塔，
热带疱疹可能不会持续只要冷却瓦片。如果您想要酷疱疹，请选择白色带状疱疹 - 它们会比深色瓦片留下更冷却。在确定夏季瓦片温度时，瓦片颜色比通风更重要。
也就是说，有许多影响瓦片寿命的因素，并且瓦片温度只是其中之一。长寿的差异可能不是很大的。