将支持者杆挤压在乙烯基窗户周围的缝隙中，我是否应该在外部填补？
The instructions for my SmartSide panel siding call for a minimum 3/16″ gap between the window frame and the trim, and then sealant applied in that gap. The instructions for my JeldWen vinyl windows say, “For a finished look and additional protection, seal this gap on the sides with backer rod and sealant.” Simonton Windows says, ” Seal the gap with elastomeric sealant and backer rod when necessary.” Given the net leaning of these recommendations, I was all set to seal around my windows, but Martin’s post in 2011 makes sense to me: “Here’s my vote: don’t install any caulk at all between the siding and the window frame or window trim. The siding is not part of your air barrier, and it’s better to let this small crack drain freely and dry quickly.”//m.etiketa4.com/question/exterior-siding-and-window-jambs-sealant-or-backer-rod-and-sealant
What do you recommend? Have sealants improved enough in the last 8 years to change your thinking? I’m in central Arizona with 24″ overhangs on the eaves and 18″ overhangs on the gable ends of a one-story house.
如果我确实在3/4英寸深的间隙中涂上密封剂，则DynaFlex 230说明建议对1/2英寸以上的任何深度的支持杆。我的差距实际上从3/16英寸到宽1/4英寸不等。我从Rofonline.com上的参考中了解，我的闭合电池支持杆应该比间隙大1/8英寸，所以我打算购买3/8英寸的杆，但必须很难将其挤入3/16英寸的间隙。如果有什么风险在这么多的范围中压缩它会扭曲乙烯基窗框吗？
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Jeff,
The cladding and trim represent your first layer of protection agains bulk water intrusion, and I don't think the problems caused by deliberately allowing water to penetrate it are outweighed by the drying potential gaps afford - especially if the wall includes a rain-screen behind. It's mute point here anyway. Sealing the gap is required by code.
Smartside's recommendation aside, the trim is only going to expand and contract around where it is pinned by the fasteners. Leave an 1/8" gap, which doesn't need backer rod, and then caulk it.
谢谢你，马尔科姆。整个装饰都安装了，所以1/8“差距为时已晚。如果我挤进了乙烯基的窗框，您认为支持杆会给乙烯基窗框施加太大压力吗？我知道常规的膨胀泡沫，而不是最小的泡沫对于窗户和门，在内部可以使用，但我不知道压力量如何比较。
Jeff, I wouldn't worry about backer rod distorting adjacent vinyl window frames. These gaps can vary considerably; in thinner places just tug on the backer rod as you install it, which will stretch it out. At super-wide spots, twist two together. I don't think the rod, even when compressed to the point that you have to shove it in with a poker, has enough rebound force to affect the window.
不要只是使用任何随机填缝 - 我会使用 +100/-50％（例如Dymonic 100）。
Thank you, Andy and Jon.