Pour one cup of wallpaper remover and one cup of white vinegar into a large bucket. Add two cups of fabric softener and one gallon of water. Mix the solution together thoroughly, using a wooden paint stick.
Apply the solution to the wall using a large sponge, starting at the bottom and working your way up in sections. Keep applying the solution to the same section until the wall looks completely saturated with the solution.
Allow the solution to remain on the section for five minutes and then use a plastic broad knife to gently scrape the sandy texture from the wall. Hold the plastic broad knife against the wall at a 45-degree angle when you scrape, making sure that you do not press too hard and gouge the dry wall underneath the sand paint.
Continue the process until you have scraped all of the texture from the walls. Mix one gallon of water and one cup of white vinegar in a separate bucket and wipe down the walls with a clean rag to free them of any leftover residue from the sand paint removal. Allow the walls to air dry overnight.
Apply a primer to the walls, once they have dried. The primer will ensure a smooth surface before you apply your next coat of paint. Allow the primer to dry, according to manufacturer’s recommendations, and then apply your paint color to the smooth walls.