Hi. I am new to this site but see there is a lot of experienced people on here so looking for a little help. I am trying to repaint my guest bathroom. My husband's ex painted it about 14 yrs ago and did a real lousy job of it. The existing paint is all cracked and starting to peel. Is this just old paint? How do I prepare the walls for repainting? Can I just use a good primer and then paint? Any help would be appreciated. Thanks.