I'd sand back, and either use a primer as suggested or put a mist coat on before another coat since the current paint looks like it has delaminated from the coat underneath. I'd use acrylic paint like Leyland Eggshell. I've never had any issues with it in damp. Probably because its impervious.
I'd sand back, and either use a primer as suggested or put a mist coat on before another coat since the current paint looks like it has delaminated from the coat underneath. I'd use acrylic paint like Leyland Eggshell. I've never had any issues with it in damp. Probably because its impervious.