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Old 03-24-2019, 10:57 AM   #1
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Foggy Windows again!

I know this topic has been talked about in depth, however I did a couple of my own windows and they worked great last summer. I went to the D the other day and found that the windows had moisture in between the panes again. I've looked at a few different options of having someone redo them in a controlled environment or maybe having RV Glass Solutions do a single unit which is laminated. Has anyone had this done or do you have a recommended shop I can send my IGU to for repair? I know I can trust this group as you've probably been there before, Thanks in advance!
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Old 03-24-2019, 11:12 AM   #2
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Originally Posted by dcfleetwood View Post
I know this topic has been talked about in depth, however I did a couple of my own windows and they worked great last summer. I went to the D the other day and found that the windows had moisture in between the panes again. I've looked at a few different options of having someone redo them in a controlled environment or maybe having RV Glass Solutions do a single unit which is laminated. Has anyone had this done or do you have a recommended shop I can send my IGU to for repair? I know I can trust this group as you've probably been there before, Thanks in advance!

Unless the windows have been cleaned and inert gas such as argon or krypton injected between the panes, you will get fogging relatively quickly. Ambient air between the panes contains moisture and contaminants and is just like the air that gets sucked into factory windows when the seals eventually fail, causing fogging.

IMO, unless the company doing the replacement can offer a guarantee and states that inert gas is injected between the panes, you will be wasting your money on a short, temporary fix. Properly repaired windows will last as long as factory, but will eventually fail due to vibration from use. The failure will simply be further down the road, so to speak.
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Old 03-24-2019, 12:10 PM   #3
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Unless the windows have been cleaned and inert gas such as argon or krypton injected between the panes, you will get fogging relatively quickly. Ambient air between the panes contains moisture and contaminants and is just like the air that gets sucked into factory windows when the seals eventually fail, causing fogging.
Not quite true. The vast majority of insulated glass (IG) units out there; RV, commercial, and residential, are simply air filled and are not assembled in a controlled environment. The glass spacer contains a desiccant which will absorb any amount of moisture present after manufacturing. Fogging begins when the spacer has broken its seal with the glass allowing outside moisture in which eventually saturates the desiccant. The desiccant can also be saturated from the exterior if the secondary seal has been breached. The secondary seal is usually PVB or silicone.
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Old 03-24-2019, 12:20 PM   #4
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Try https://coachglass.com/products-rv-s...-and-towables/

Here a statement from them
"Our Laminate glass has a Lifetime Warranty for as long as you own the coach and will never fog up. There is no spacer in this glass which prevents creepy seal from happening. There is about a 10% difference in the thermal insulating factor, we have replaced every side window in numerous coaches and have been told by our customers that they have not been able to tell the difference in the insulating.

Important facts to know when replacing Tempered Glass with Laminate Glass:
1). We are unable to replace exit panels unless they are a slider exit window.
2). We are unable to replace panels in flush mounted windows."

I replaced the driver and passenger side windows. I am pleased.
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Old 03-24-2019, 01:18 PM   #5
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Not quite true. The vast majority of insulated glass (IG) units out there; RV, commercial, and residential, are simply air filled and are not assembled in a controlled environment. The glass spacer contains a desiccant which will absorb any amount of moisture present after manufacturing. Fogging begins when the spacer has broken its seal with the glass allowing outside moisture in which eventually saturates the desiccant. The desiccant can also be saturated from the exterior if the secondary seal has been breached. The secondary seal is usually PVB or silicone.

Thanks for the correction.


It seems that whichever method is used to repair dual pane glass, it is important to ask about which method is used, gas or desiccant, and length of warranty. Failure of both types is due to the same cause--seals.
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Old 03-24-2019, 05:37 PM   #6
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All but 2 of the 12 insulated windows in our mh had fogging couldn't see out of passangers door, thought about repair it took about 1 minute to decide I only wanted to fix them once I took the motor home to rv glass solutions in colberg ore. they replaced all windows for $4600 with lifetime warrenty aginst fogging and its really nice to be able to see out,we are very happy.
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Old 03-24-2019, 06:37 PM   #7
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I just had my drivers side and door glass replaced with laminated. I love it. I am going to get the rest done as well this coming fall.
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Old 03-24-2019, 07:01 PM   #8
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I don't understand replacing a failed concept with a repaired version of a failed concept. I will be replacing mine with single pane laminate. The glass is $18.00 a square foot. I can remove and install the windows myself one at a time and they will install the panes in the window frame for about 75-100 each. This is all through a local auto glass company and I will never have to deal with it again.
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Old 03-24-2019, 07:51 PM   #9
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I don't understand replacing a failed concept with a repaired version of a failed concept.
There's a difference between a failed concept and a poorly executed concept.
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Old 03-25-2019, 04:37 PM   #10
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Well2343

If you can live with having single pane glass here is how I got to that point.

I covered the inside pane with duct tape then took a spring loaded punch and shattered the glass --- all the time holding the majority of it together with the duct tape. Using the duct tape saves about 90% of the cleanup as you can remove most of it as one piece. Some detailed cleanup after and I now have a clear window ( after cleanup of course ) for the cost of some duct tape and 30 min of my time.
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Old 03-25-2019, 06:47 PM   #11
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I just had my drivers side and door glass replaced with laminated. I love it. I am going to get the rest done as well this coming fall.
Who'd you have do the work?
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Old 03-25-2019, 08:03 PM   #12
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Who'd you have do the work?
Precision Auto Glass Daytona, FL. They replaced the windshields on my coach (one cracked one with a stone chip that spread), while there I asked if they knew anyone that did defogging the rest is history.
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Old 03-25-2019, 08:11 PM   #13
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All but 2 of the 12 insulated windows in our mh had fogging couldn't see out of passangers door, thought about repair it took about 1 minute to decide I only wanted to fix them once I took the motor home to rv glass solutions in colberg ore. they replaced all windows for $4600 with lifetime warrenty aginst fogging and its really nice to be able to see out,we are very happy.
No Colberg in OR. Try Coburg instead.
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Old 03-25-2019, 08:51 PM   #14
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I'm not sure where you are located, but Darren Thomas Glass Company in Sebring, Florida replaces dual pane glass with single pane laminate as part of their windshield services.

They have two point hook-ups for their customers on site so you can stay while the work is being performed.
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