Can You Make Textured Walls Smooth. Textured walls come in a variety of texture levels. You do not need to knock down the wall or sand it smooth to get a smooth finish, however.
Making the ceiling into a flat, uniform surface can be messy without the right technique.
Where walls have inconsistent layers of texture, with high and low bumps, it is better to use a steel trowel beforehand to remove as much of the texture as possible. Wall texture can cover up imperfect drywall or mudding work, and it dries rapidly enough that you can begin painting just hours later. But, those bumpy textured walls or damaged drywall are not smooth enough? Instead, you make it go away by coating over it with it may take several days to hide your texture because, depending on how rough it is, it may take several coats.