I know these are basic questions, but I know nothing about painting!! I want to update my house a bit. The walls are painted a basic white color and I want to paint over them. With existing paint already there, do I need a primer to paint over it? Or can I just use paint right over it?
Secondly, the wood trim where the wall meets the floor is its natural color. I'm pretty sure it's been sealed over with something. I want to paint these white. Do I have to sand them down, prime them and then paint them or is it ok to just paint it over in primer and then paint?
Thanks in advance for any answers!