2 ways to approach this. Either way, the glass has to be removed from the frame. The reason it has fogged up between the panes is because the seal has failed, allowing air and moisture to enter.
1) Order a new glass unit to replace the failed one
Or
2) Remove the glass unit and repair it.
Option 2: It is a lot of work. I have done this on residential glass. The process is the same.
Remove the glass from the frame and with a sharp utility knife, cut the glass away from the spacer bar, both sides. Then thoroughly clean the glass, if it is possible. More on that later.
A bandaid approach is to reseal the glass to the spacer bar. NOT recommended! The best way is to get new spacer bar and properly reseal it with glazing silicone. The standard seal is polysulphide, which is used extensively for residential glazing. Your house windows don't move around, your MH windows do. Therefore silicone glazing is better. All this needs to be done in a controlled environment. Clean and dry!
The inside of the spacer bar is filled with desiccant to absorb moisture and keep the glass dry inside. Once the unit has failed, the desiccant is rendered useless.
If the unit has been fogged up for more than a short period of time, the glass will be etched inside and impossible to clean. It eats right into the glass, ruining it. A trained eye can tell by looking at it. Look for cloudy, milky staining on the glass.
I have done this process literally on the tailgate of my truck, but then I have also worked in the industry for several decades.
In all honesty, don't try this yourself if you are not familiar with it.
Take the glass to a glass shop and have a pro fix it, or just order a new piece of glass and put it in your existing frame. Keep in mind both sides of the glass are tempered safety glass. This is a whole process to make. Tempering is done in a large oven to heat treat it.
It is impossible to correct this without removing the glass from the window.
As usual, I get long winded.....:B
2007 GMC 3500 dually ext. cab 4X4 LBZ Dmax/Allison - 2007 Pacific Coachworks Tango 306RLSS
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