I second Dana's assessment. The idea is to allow the snow to remove itself if possible. We always mount the top row as close to the peak as possible to prevent snow build up above. In the old days, when arrays were smaller, I'd recommend a good coat of RainX every year as it does help snow slide easier, but roof mounted large arrays can be difficult, at least. I've found that snow held beneath the bottom row of modules can build up and prevent module snow from sliding off, often refreezing as even harder to remove ice. The long and short, to me, is that snow removal is a real pita and why we've got so many ground mounted arrays in Maine....
Daryl On Wed, Oct 1, 2025, 11:09 AM Dana Orzel via RE-wrenches < [email protected]> wrote: > Hey there, Chris I’ve never used Sno retention on the bottom of an array. > I’ve always thought that clearing the array was the basic idea. I > understand if there’s a doorway underneath it a raise that hold snow for > long periods of time as in most of the winter tend to get iced up and I > have multiple photos of array is coming off of roofs due to snow not > sliding off mostly due to either being east or west facing. > I suppose if I had a large area of roof above the array, I might do Sno > offenses above the array, but not below the array > Dana Orzel - [email protected] - 208.721.7003 > > > On Oct 1, 2025, at 5:12 AM, Chris Sparadeo via RE-wrenches < > [email protected]> wrote: > > > > > > Hi all, > > > > I’m wondering what people in snow prone areas are using for module > mounted snow retention. I have used the Alpine SnowGuard in the past, but > it’s not the easiest to install, especially when the leading edge of the > module is close to the drip edge on a multi-story building. There don’t > seem to be many other options on the market, so curious if there are other > offerings or methods that people have found helpful. > > > > Thanks in advance! > > > > Chris Sparadeo > > > > VT Master Electrician # EM 08220 > > C_802-369-4458 > > _______________________________________________ > > List sponsored by Redwood Alliance > > > > Pay optional member dues here: http://re-wrenches.org > > > > List Address: [email protected] > > > > Change listserver email address & settings: > > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > > > There are two list archives for searching. When one doesn't work, try > the other: > > https://www.mail-archive.com/[email protected]/ > > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > > > List rules & etiquette: > > http://www.re-wrenches.org/etiquette.htm > > > > Check out or update participant bios: > > http://www.members.re-wrenches.org > > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
