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Detailing bottom of Roxul Comfort board IS

How are those of you using this product detailing the bottom of the wall where the Roxul is exposed?

I noticed on one post about a project in BC, they used a perforated galvanized channel to encase the bottom of the IS. Does anyone know where to source a channel like that?

I'll be using 3" Comfort board over 1/2 CDX sheathing, over 3/4" x 3" furring strips, then cedar shingles.

Thanks!

Asked by edkrause
Posted Aug 8, 2014 2:43 PM ET

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4 Answers

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1.

Edward,

Here are 2 links to installing Roxul mineral wool on the exterior. These photos show the J-channel at the bottom of the Roxul. The only company I've found that has a similar product is Menzies Metal. I wasn't able to find that product when we were building our house, so we just skipped it.

http://www.greenbuildingadvisor.com/blogs/dept/guest-blogs/installing-ro...

http://agreenhearth.com/stone-wool-to-warm-the-heart-and-the-home/

http://www.menzies-metal.com/vent-flashings/perforated-j-channel-rain-sc...

Answered by LucyF
Posted Aug 8, 2014 9:52 PM ET

2.

Edward,
Show this photo to a local sheet metal shop and ask if they can bend you some perforated galvanized channel that looks like the photo.

.

Roxul ComfortBoard in galvanized channel.jpg
Answered by user-756436
Posted Aug 9, 2014 4:24 AM ET

3.

Thanks very much, Lucy and Martin.

-Ed

Answered by edkrause
Posted Aug 9, 2014 9:42 AM ET
Edited Aug 9, 2014 10:17 AM ET.

4.

Edward,
It is a lot easier here in BC. Because our code mandates rain screens, most lumberyards stock a variety of widths and as Martin said will also bend up any other custom sizes. Soffit installers also have breaks and might be another place to try.

Answered by user-1132906
Posted Aug 9, 2014 10:21 AM ET

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