Do I have to strip or can I paint over?
As best I remember, about 25 years ago we used a liquid deglosser on some windows to avoid sanding them. Then we painted them with an inexpensive latex paint.
Twenty-five years later, we are ready to paint again, and the latex can be scraped off using some thumbnail pressure. What do we need to do to prep these windows? Do we have to strip them to get good paint adherence? What do you suggest?
Here are a couple of pictures. In the first, you can see where someone clever scratched the word "hi." The top layer (cream) is partially sanded off. Under that is a brown layer. Below that is a robin's egg blue. The brown and blue seem well-adhered. Many thanks for any help.