No, our cleaning process will not damage the windows of your boat cover or tent. Most of the boat covers and tents we clean are equipped with window film.
However, some windows are already in poor condition. The plasticisers in the film have been damaged. This means the window is harder, more fragile, and possibly less transparent. In this case, a window may tear. However, that has nothing to do with cleaning. It is simply because the window needs to be replaced.