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Old 05-02-2019, 11:16 AM   #1
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Foggy Windows - How to Clean Them?

I've read dozens of threads about dual pane windows fogging but nowhere have I read anything about tips on cleaning. Is it possible to separate, clean and reassemble? Is this something that can be done as a DIY? How about any videos on clearing fogged dualies? I have a couple that have been that way for a couple years now; not life and death but I sure would like to get some info on anything I could do to clear them up a bit. Thanks for any hints!
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Old 05-02-2019, 11:34 AM   #2
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you mean there is stuff between the panes of glass on dual pane windows? If that's the case then NO, you can't clean between them. That's one "unit" of glazing and the space between the panes is sealed. If there's discoloration or dirt then that seal has failed.
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Old 05-02-2019, 12:06 PM   #3
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No. Not so much "stuff" but just a very translucent "haze" as if there was a slight fog between the panes. No moisture...it just looks like there is. Hazy...can't think of a better word to describe it.
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Old 05-02-2019, 12:43 PM   #4
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Not easy but possible, i did it on an old class A.

I removed the window and boarded up the opening. Cut the adhesive that holds the glass together and separated them and cleaned the glass and the spacer. Re-assembled with clear silicon caulk , I left 2 small gaps and used canned air to spray in one gap to try to remove moisture before sealing both.

Since I did this I found that you can get rebuilding kits which I would do if needed again as the spacer is filled with desiccant and it would be much better to replace it.

I waited way to long to do this and the glass inside was actually etched, with rubbing compound and buffers I was able get it usable but not clear. I now have a wet diamond grinder that I would have tried with the finest grit/polish.
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Old 05-02-2019, 02:16 PM   #5
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Foggy Windows - How to Clean Them?

The seal is likely broken between the 2 pains of glass. Common problem on thermal windows in homes as well. There are places that repair home windows when this happens so you might want to call some local window places and see if they can reseal it for you. You will likely have to take the window out to do this job..
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Old 05-03-2019, 07:28 AM   #6
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Thanks for info

Yes, the seal is broken on the fogged windows. On one you can actually lift the bottom away just a hair and see the split/open areas.
So...what about these kits? I am not averse to pulling off a pane, cleaning both surfaces and reapplying but don't know what adhesive to use to reattach the panes together. Found several possibles but nothing for sure that would keep the outer pane from eventually just falling off...really bad news. I have been in contact with one company very close by but they do not do mobile work. They offered that they would work on just the window if I brought it in but I do not care to remove an entire window for treatment of one of the small pane sections affected. We live full time in the fiver now and taking it to them is not an option. I know this isn't rocket science but would love to know what adhesive works over the long term. You Tube videos were basically useless as I never found one dealing with frameless windows...except one 12 second one where the guy shows the separation on a frameless but nothing about repairing it. Sigh...
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Old 05-03-2019, 07:54 AM   #7
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I doubt if this can be done without removing the window, I just boarded mine up while I was working on it.

I can't find the kists I was before but I did fine this one. https://www.daverootrvglassrepair.co...pair-kits.html
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Old 05-03-2019, 08:41 AM   #8
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If you're handy you can do this yourself but you cannot make your own spacer or reuse a spacer or it will just fog again. The spacer contains desiccant to absorb any moisture. When insulated glass (IG) units fog, it's usually because the seal has broken and the desiccant has become saturated. Most residential and commercial IG units use hollow metal spacers filled with desiccant pellets. Since you probably don't have a bender and dies to form the radiused corners, you'll need to use a flexible spacer. Probably the best flexible spacer is the Edgetech Super Spacer. Search "super spacer" on Amazon. It's a silicone foam embedded with desiccant and has the adhesive on two sides. It comes in various widths so measure your spacer before separating the glass. The glass may also be etched slightly from the moisture so it may need to be cleaned with a water spot and stain remover such as CRL Sparkle (Amazon). Recess the outside edge of the spacer at least 1/16" and backfill with CRL 877 Super Spacer Sealant. Also on Amazon. Tool the edge with a plastic spatula.
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Old 05-03-2019, 02:55 PM   #9
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I had this happen on my MH, Took it to Sun Coast Designers in Hudson, FL they have a great repair service
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Old 05-03-2019, 04:49 PM   #10
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Foggy windows

Quote:
Originally Posted by Papicamper View Post
No. Not so much "stuff" but just a very translucent "haze" as if there was a slight fog between the panes. No moisture...it just looks like there is. Hazy...can't think of a better word to describe it.
I'm not a window expert, but I thought the "air" between the panes, was something other than plain air. Once the seal was broken, fog was eminent. If the seal is broken, isn't the insulating quality of the window compromised? Maybe a good glass shop can re-seal them?
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