I recently moved out of my apartment. I had painted the bedroom a light shade of green that could easily be covered with 1 layer of paint by the apartments after I moved out. They are charging me the cost of repainting because they said they had to use a primer since I had used a semi-gloss paint and they use flat. Is this true?
Is it necessary to use a primer to before covering a semi-gloss latex paint with a flat latex paint?