We are still shopping around for a class a. We've looked at or read about several coaches that had to have their windows replaced due to the seal breaking on the insulated type. We've been mostly l...
We've had two of our foggy dual pane windows worked on. One was taken out, cleaned, and reinstalled. The other was replaced with dual panes, custom cut on location. Tech told us the damage was too bad to just clean because the moisture had started crystalizing and actually scratching the glass.
I just figured this was the price to pay for dual pane windows. Others on here are confirming that.