选择高性能窗口
Finally moving forward on a zone 7 house build in Northern Wisconsin this spring and I need to settle on our window selection.
这座房子是2,000平方英尺，我们使用的是2×6密集的包装纤维素壁，并带有4英寸的矿物质羊毛外部绝缘层。我们将在阁楼桁架中具有深层绝缘材料和屋顶系统的18英寸通风式I-temist。我们尚未完成重新检查或WUFI分析，但是为了完成我们的建筑图纸，我需要尽快解决我们的窗口包。
We’re after an aluminum-clad wood window for aesthetic and durability.
I’ve received quotes from countless companies but considering the product and service, we’ve narrowed it down to 2–Loewen and Zola. Here is the info:
Loewen
Doug fir casements and fixed
Total window and door cost: $43,873
Airtightness: .03 cfm/ft2 @ 1920 Pa (40.10 psf)
U-Value：0.2可操作，0.17固定
SHGC：0.34-0.4
VT: 0.42-0.49
佐拉
Finger-jointed pine tilt-and-turns (can upgrade to other woods)
Total window and door cost: $45,527 + $5,800 shipping = $51,327
密封性:03 cfm / ft2 @ 4800 Pa (100.25 psf)
u-value: 0.16 operable, 0.16 fixed
SHGC: 0.35-0.4
VT：0.5
看到样品，我希望Zola的性能要比Loewen套餐好很多，因为它们更强大。就我的知识而言，Zola仅是适度的U-Value和相同的气密性（尽管设计压力不同）。我想念什么吗？
谁能提供有关这些窗户和门比较的更多见解？当您包括额外的运输费用时，Zola的价格为7,454美元，如果我要升级到Douglas fir（如Loewens），则又有5,000美元。
How will these windows compare and perform in real life?
Thanks!
GBA细节库
由气候和房屋部分组织的一千个建筑细节的集合
Replies
Looks like you're on the right track Michael!
I'm waiting to see some input also from members. I used to like Wasco but they've changed in a very bad way. No help, poor salesmanship & deliveries of the wrong goods. Have you looked into 475s offerings?
威斯康星州PK Appleton
Hi Paul, greetings to another Wisconsinite!
I did look into the 475 options–great windows and competitively priced, but the response times were just too long. I was concerned that any amount of communication would be slow and ultimately cause delay. Zola and Loewen have had incredible pre-sale communication and service.
I, too, have an interest in finding how performance windows for a four-season room project I have. I have been looking at Alpen's for now. When you and Paul mention the 475's, are you referring to windows being sold by 475 High Performance Building Supply? If so, the brand of windows they seem to sell is OptiWin. Is that right, or am I missing something? Thanks!
嗨，马特。对，那是正确的。
Thank you!
迈克尔，
不要劫持您的线程。您能澄清一下您有多少个窗户，玻璃，三窗格等的平方英尺吗？看到您为了钱而获得什么会很有帮助
Amer
嗨，EagleyeShawk，
您可以看到我的窗户时间表。是的，这两个选项都是三窗格。
看起来像窗户和门总计473平方英尺，因此它们在以下内容中出现：
Loewen- $92.75/sf
佐拉Thermo Clad - $108.51
迈克尔，
Thank you for sharing the schedule. Wow, I had no idea that the triple pane windows were that expensive. I’m glad you shared that information with us. Good luck with your decision. I will be rethinking our window budget!
Amer
Yes, they're expensive. Don't close the book on triple pane though! You can get uPVC triple pane tilt and turn for half the cost that I've outlined here. They're a lot less expensive than aluminum clad wood.
在明尼苏达州，与Marvin和Andersen相比，Zola看起来真的很好。
谢谢大家！
Are any building scientists or folks with a deep understanding of window performance able to help me understand what the real life difference is between these options and anything else I should be considering that I am not?
嗨，迈克尔，这可能是您的老消息，但我将其传递给它，因为它滑倒了：https://www.finehomebuilding.com/2021/01/11/the-cornerstones-of-comfort-comfort-how-to-choose-the-choose-the-the-the-windows-windows-and-doors-for-your-climate climate
我认为这在将无数规格转换为诸如舒适之类的相关事物方面做得非常出色。
Number of gaskets has an effect on the airtightness numbers. I can't speak to Loewen specifically but it's common for North American windows to only include one. My own casements have developed frost at the corners of the gasket, suggesting small air leakage (Pella fiberglass). Tilt turns often have multiple seals and multiple locking points ensuring tight consistent seal and resistance at higher wind pressures.
u 0.16至0.2的能源节省并没有大不相同，但是如果您打算加湿以舒适为舒适，则可能有些凝聚力。制造商竭尽全力，低于U0.2的小额增量改进。我敢打赌，您基本上看到了框架设计的热差，玻璃性能中心的差异较小。
Just my $0.02. I'd splurge for the tilt turns myself not for energy savings which are meager, but just for the 'feel' and operation.
您要为铝和木框支付的费用要比三窗格Igu所支付。即使在双窗格中，木框铝制覆盖窗也非常昂贵。
当涉及到窗框时，玻璃纤维或UPVC是您的朋友。
Matt Risinger did an episode on European high performance windows ordered through this outfit:https://www.eas-usa.com
如果我没记错的话，三重玻璃式欧洲窗户，包括容器货物，比美国产品便宜。
I have no relationship with this European window rep, I am just baffled at the lousy value proposition of US windows.
卢卡斯，
Point taken but I believe Loewen are Canadian and Zola are definitely not manufactured this side of the Atlantic.
即使在欧洲，木架铝制覆盖窗口也很昂贵。它们的生产量很高，然后铝也不便宜。这就是为什么在欧洲，标准窗格的三重窗格，但UPVC框架也是如此。
Price out triple pane in fiberglass or uPVC frames from a company like Alpen and you will see how affordable triple panes are vs wood frame aluminum clad windows that are imported from Europe.
彼得，
I agree. What do you think the price differential is between a Loewen fiberglass window and the aluminum clad wood windows shown here? About 30% less? That’s still about $60/sqft.
I actually saw some fiberglass modern Marvin windows the other day, double pane, u value 0.26. They looked quite slick and had decent specs. Was very tempted!
与Alpen Fiberglass Triple Pane相比，更像是40％的节省。U-Value为0.16的3'0 x 4'0固定窗口约为每平方英尺50美元的低至中$ 50。
彼得，
Thanks for the information. Very helpful!
I have European triple pane wood/alu-clad that worked out to $82/sf, but the dollar was really strong then. At the time Zola was about 10% more. The cheapest wood/alu-clad window was KlearWall, but I did not like their profiles. Intus had the best value fiberglass, but I don't believe they sell residential any more. I would not have an issue going fiberglass next time.
Nice windows! Can't beat Doug Fir aluminum clad.
我的两分钱是，对于您要建造的建筑质量，我个人会寻找U = 0.11-0.12 Windows。我的第一个反应是“耶稣，每平方英尺100美元。对于R5 Windows！”。但是我得到了道格冷杉的一部分。
如果您愿意将SHGC保持在0.34范围内（我同意顺便说一句），我很惊讶您无法在0.6左右上升。在我看来，VT在0.4-0.5处是明显的。