更多能量智能细节
该细节显示了我们如何采用更高级的墙件组件，该组件具有更高的R值，更大的热中断和比常规壁更加隔热效果，并将其与标准频带托梁结合在一起。二楼带托梁是一楼高于级别的壁，二楼框架和二楼墙壁都相交的点。这种复杂性使其容易对可能导致水渗水和空气泄漏的细节不正确。令人担忧的是如何在下面的双层壁的顶部和上方双层壁的底部保持控制层的连续性。
We use a two-part water management system. The cement-board lap siding is the primary weather barrier; it is installed shingle style, so every consecutive layer sheds water above the layer below. A rainscreen provides the secondary defense. The 1×3 wood furring is spaced 24 in. o.c. to align with the stud frame below, providing a clear 3/4-in. drainage/ventilation plane. The rainscreen system is installed over 1/2-in. plywood sheathing, which is fully weatherized with a自我粘附的防风雨障碍（WRB），特别是Siga Majvest 500 SA，它也充当空中屏障。空气密封策略包括将外护套密封到下面的木框上。使用此组件，空气屏障保持在外墙框架上的同一平面附近，从而简化安装。
蒸汽管理与Majvest-wrapped sheathing to the exterior and Siga Majrex smart vapor retarder on the interior of the wall. The former limits the amount of moisture entering the wall assembly; the latter slows moisture migration. Should a higher level of moisture make it into the wall cavity, the Majrex’s ability to dry is increased, hence the term “smart” vapor retarder. As the plywood sheathing’s moisture content increases, so does its permeance, allowing the rainscreen system to assist in…
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6条评论
似乎在托体托梁的隔热材料内部没有蒸气延迟器。那是对的吗？在没有外部连续绝缘的组件中，我经常看到它建议在带托梁的内部停止水分的方法。例如，用喷雾泡沫密封在适当的位置。
用3/4英寸的胶合板将两堵墙绑在顶部板上的上方，将达到三件事。
- 允许完整的8英尺墙，这意味着您不必砍伐干墙。
- 它可以充当火灾，而不是使用易于移位的瓦特。
- Aid the transition of the air-barrier from the exterior wall plane to the ceiling at the trusses or rafters.
1/2“ GWB可以运行24 oC？
What specific purpose does the 1x3 ceiling strapping serve? (which I assume runs perpendicular, not parallel as shown, to the joists.)
Does the fact that the inner wall is the same height as the outer mean they both need to be built before the joists go on? And does that cause any sequencing issues, or unintentional load bearing issues.
泰勒，
“ 1x3天花板绑带有什么具体目的？”
Builders who work on the East Coast believe all ceilings need strapping. That we heathens out here on the West Coast successfully build without it has failed to convince them otherwise.
我尚不清楚第二层带托梁上的蒸气控制策略是什么。它被埋葬，无法随着时间的流逝进行检查，但不能以蒸气变量膜上的方式保护不受内部水分的保护。同样，DPC可以在没有坚实的后背下垂，并留下裂开的冷裸露边缘托梁，顶部暴露在潮湿的内部空气中。
双螺柱墙是一个不错的选择，这是我尚未看到没有闭孔泡沫或面向刚性刚性刚性多丽莎的一个细节。让我们找到一个优雅的解决方案。
贝蒂，
它可能会导致其他并发症，但一种解决方案是使内壁负载承载，停止地板系统，并具有（几乎）连续的外壁。
GBA featured a project some time ago where the outer-wall ran up to the sub-floor, which extended out and was sandwiched between a single top and bottom plate. As I recall the inner wall was sheathed on the outside face, burying the air-and vapour control layers deep in the wall assembly - and reducing the burden put in whatever happens inside the rim-joist.
不幸的是，这些天我的记忆还远远不够好，无法记住它是哪个项目。
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