The wall isn't in too bad of shape, but there are a few dings in it. There is book size hole I am patching with a piece of regular drywall.
I have searched and searched but cannot find any information on what this product is. I would like to fix the damage the wall has and paint it. Because of its surface, I'm not sure what to do exactly. I have been experimenting.
Does anyone know what this wall might be and how I can go about fixing it?
I have considered trying to skim coat the whole thing. Should I try to sand this with something coarse to roughen it up first? Or should I just fix the damaged spots and attempt to prime the whole wall and paint?