what's wrong with these this window ?
I noticed these spots on two windows a few weeks ago. When it finally was a bit warmer I went outside to wash them but the spots are between the panes. Could it be that the seal is broken? We just moved into this house a few months ago and the previous owner had replaced the windows. But there are no markings on the glass or anywhere else on the window that tells us who the maker is. So who do I call to fix the problem? And does anyone have an idea what the problem may be?