Corrugated metal over mineral wool

斯泰西V.|发布了绿色建筑技术在2018年2月6日07:17 AM

Hi, I am looking for ideas for installing vertical corrugated metal over Roxul comfort board.

有关该项目的更多信息：
Zone 5B,
2×6 @ 24″ OC walls insulated with Roxul batts (R-23),
plywood, wrb, and
2″ Roxul Comfortboard (R-8), corrugated metal siding running vertically.

我需要安装垂直毛茸茸的一层水平毛发，以将瓦楞纸板连接到吗？金属可以直接连接在灌木丛上吗？

Thanks for any thoughts/ ideas.

回答

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Replies

GBA Editor

马丁·霍洛拉|Feb 07, 2018 04:37am|#1

User-66 etc.,
首先，你能告诉我们你的名字吗？

If the corrugated metal panels are sold as siding, your first responsibility is to install the siding as instructed by the siding manufacturer. Most siding manufacturers post their installation instructions online. If the instructions are unclear, you can contact the siding manufacturer by phone or email.

One problem with trying to fasten siding through 2 inches of mineral wool is the need for very long fasteners. My instinct tells me that using furring strips will make the installation easier.
Expert Member

Malcolm Taylor|2018年2月7日11:34 AM|#2

User...358,

我不认为你可以直接安装它。您肯定需要一些支持在顶部，基地，角落和开口处闪烁。此外，由于面板依赖于牵引式紧固件，我认为我不认为你可以依靠它们保持紧绷，作为矿物羊毛的背衬。

Corrugated panels have a lot of inherent rigidity, so you will only need horizontal furring at very infrequent intervals - say 4'-0"oc.
斯泰西V.|Feb 07, 2018 01:11pm|#3

Thanks for the replies Martin and Malcolm. My name is Stacey. (I updated my screen name after I made this post, but it didn't update to my chosen name "stacey v").

Anyways, it was my hunch too that furring would be needed and the point about the gasketed fasteners is a good one. Would horizontal furring only still provide the drainage needed for a vented rain screen? (As you suggested Malcolm). This is my first project using exterior Roxul board, and I understand that it is softer and compresses more than rigid foam, but also that it is more breathable and drains.

Attachment details from the manufacturer are all for attaching to a solid substrate, so furring it will be. The question do I need to install vertical furring first then horizontal to maintain drainage, or can I just do horizontal only when using Roxul exterior insulation.

Thanks again for the feedback!
斯泰西V.|Feb 07, 2018 01:14pm|#4

PS - How do I get my user name updated? Here is a screen shot of my account profile.
David Williams|2018年2月7日09:27 PM|#5

I'm planning on a similar system for my cabin, with some variation. I'm going to put up 2" of Comfortboard against the WRB house wrap, then lag horizontal 2x4s on 24" centers to support my metal siding with 1 1/2" Comfortboard between the 2x4s. While the Comfortboard will compress more than rigid foam, it shouldn't be a problem as long as you don't over torque the lag bolts and keep the 2x4s (or furring strips) level with one another. Corrugated metal will provide plenty of air movement behind the siding to allow moisture to escape.

If you haven't looked this Roxul brochure over, it's worth a look. Plenty of diagrams and instructions for different configurations and applications:https://www.pocobuildingsupplies.com/wp-content/uploads/2016/10/13A76-ROXUL-COMFORTBOARD-80-Installation-Guide-REVISED-ENG-201604.pdf
斯泰西V.|Feb 13, 2018 12:21pm|#6

Thanks David! That guide is very helpful.