Seems I missed a crucial basic here but plaster doesn't appear to stick to a painted surface.
I have repaired cracks in my 100 year old lath and plaster walls using Rod's techniques but I didn't strip the paint first. Today I put in a second coat of cornice cement and it fills the cracks really well but doesn't stick to the painted edge which I think means I won't be able to feather the edges with base coat then top coat.
Can someone tell me how to get the plaster to stick to the paint. I did try to strip the paint but it won't budge.
I need to cover a rendered wall.. It's extremely rough textured and painted. Can I simply apply two coats of top coat or will I have problems with it not sticking because of the paint.