Can You Skim Coat Plaster Walls. Full skim coating is tricky and it takes some practice (and a lot of sanding) to get a decent result. How to skim coat a wall after wallpaper removal step by step tutorial.
Fyi, most stucco and concrete mixes use portland cement as stucco combines fine sand with portland cement, thus can be applied to walls as it's like a peanut butter consistency, no rocks in it.
Skim coating is the process of applying a layer of muddy plaster compound to rough or damaged ceilings and walls to either smooth or repair them. I'll be using the paint roller method with a 1 1/4 roller cover and thinned down all purpose joint compound. Once the second coat is beginning to dry (touch test again), you can start 'closing in' the wall, running your metal float over the wall to smooth out any imperfections. Skim coating is the only way to achieve a.