Start with a concrete surface grinder to get the surface smooth. Then use a belt or rotating sander with a rough grit sandpaper. Wet the wall to cut down on dust and reduce heat. As you progress, you can use finer grit sandpaper for a smoother finish.
How to Sand Concrete Walls?
Sanding concrete walls is a necessary step in the process of finishing a concrete surface. It can be a tedious and time-consuming job, but the results are worth it. Here are some tips on how to sand concrete walls properly and effectively.
First, you need to make sure you have the right tools for the job. Sanding concrete walls requires the use of an orbital sander, which is a power tool that moves in a circular motion to sand the surface. You’ll also need to have a bucket of water, a vacuum cleaner, and a dust mask.
Once you have all your tools ready, you can begin sanding. Start by using a coarse-grit sandpaper to grind away any bumps and imperfections. Then, switch to a medium-grit sandpaper to remove any remaining bumps and smooth the surface. Finally, switch to a fine-grit sandpaper to finish the job. Make sure to keep the sander moving as you go, and keep the area wet with water.
After you’ve finished sanding, use a vacuum cleaner to remove any dust and debris from the surface. Be sure to use a dust mask when cleaning, as the dust from sanding can be hazardous to your health.