Housewrap/strapping with board and batten siding
Hello. I am thinking about using vertical pine board and batten on the exterior of my new house. This will require horizontal strapping which I initially thought should be placed over the house wrap. I then began to think about where the water will go when (not if) it finds it’s way behind the boards. Does the horizontal strapping impede on the water’s ability to drain down? Will it soak the strapping and eventually cause issues? Maybe I should place the house wrap over the strapping so that the water has a place to go, not interfering with the strapping? Any thoughts? Is there a house wrap/drainage surface that would work best in this application?
提前致谢。马特。
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马修，
My own opinion is that you shouldn't worry. The small volume of water that gets past your siding will evaporate before it causes any problems.
如果您对我的回答持怀疑态度，并且仍然担心这个问题，那么大多数屋面供应室出售缝制板条，水平安装时将允许排水。
Fine Homebuilding的Project House展示了一种解决方案，该解决方案有点耗时，但可以通过交叉绑带来解决此问题 - 应用WRB，然后垂直绑带，然后是水平绑带，然后是垂直覆层。链接的图像显示了此模式：
http://www.finehomebuilding.com/item/20808/sneak-peek-at-a-project-house-wall-section
马丁，
When you say "notched battens", do you mean notched strapping? My board and batten will be vertical.
While I have you, have you heard of mold or rot issues with the pine boards that have an air space behind them (this application)? I have been told that I need to prime the back side of the board for moisture protection. Really don't want to do all that labor if it's really not necessary.
One more thing. The wood I am getting will be green. When putting up the pine boards, what's your suggestion of how much of a gap I should leave? I was thinking 1/8". Batten will obviously cover expansion and contraction of the joint behind it.
谢谢。
马修，
I was thinking of your horizontal furring strips. But actually, a batten = a furring strip = strapping. These are just different words for what amounts to a 1x3 or 1x4.
Here is a photo -- not exactly what I had in mind, but it gives you an idea how these are used by roofers. I couldn't find a photo showing the exact type of batten I'm talking about.
.
马修，
我不会担心霉菌或腐烂。这种类型的组件应容易干燥到外部。
If you are installing green boards, you can butt them tightly to each other. They'll shrink. Fasten your battens with a single nail in the middle of the batten, aiming for the crack between the boards. That way your fasteners won't bind the boards (or cause splitting) as the boards shrink. If any of the battens curl, you can come back later with stainless-steel screws and correct the curling.
我知道它们会收缩，但是，如果我将它们紧紧抓住，它们将永远不会超过那个大小？谢谢。
马修，
Trust me -- if you are putting them up green, they will shrink. They won't swell.
You could take a skill saw and make shallow cuts on the back of the strapping, for drainage if you are concerned. These could be whacked out in a short time, -eyeballing the distance in between.
Back priming is an upgrade choice as is rainscreening.
3/4" space will be nice critter condo. There are alternatives.
对于永远担心的，以每英尺1/4英寸的斜率安装毛茸茸，在4-8英尺的段中，细分之间的间隙为1/4英寸，即使在用压力垫圈清洁壁板时，也可以保证排水效果很好。
在1/4英寸/脚时，如果您希望所有的板和板条紧固件在水平水平线上排队，则在8'时会有2英寸的垂直偏移量，可以在下一个段中恢复。在4'时，这是1英寸的偏移。
您可以在绑带下安装一个“排水包裹”，该绑带中有微小的通道，这将使水排水。我同意马丁的观点，即绑带不太可能腐烂，但这增加了一些保险。
雨屏有两个主要功能：提供毛细管断裂，并排放腔体以促进干燥。在倾斜水平绑带或切割排水槽口时，可能会处理经过壁板的任何散装水的侵入，但不允许对空间进行任何通风。我想这取决于您的气候，是否通过壁板对外部干燥是否足够。
AJ Builder, can u else orate on ways to keep out the bugs/critters from behind the 3/4" air space? I'm considering a similar application of b&b siding.
*详细
里克（Rick），排水膜为小动物留下了较少的可用空间。在我建造底漆就足够的地方，大多数时间都没有进行雨水筛查，这取决于.....很大程度上取决于....谁和欲望和成本。
里克，
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