Sanding Dust from Smoothing a Textured Wall

Bumps from textured walls look bad under wallpaper, and they interfere with good adhesion. To smooth a textured wall, I skim-float with joint compound (a plaster-like drywall material). Once it’s dry, I sand it smooth. This makes dust. In the photo above, the wall only needed a light skim-coat, so the sanding was minimal. Yet, you can see how much dust was generated. On the right is the “tent” of plastic I ran across the wall to prevent dust from getting to other parts of the room.
Here’s a closer look at the powder that has fallen to the floor. And also the sanding sponge I like. The 90 degree corners tend to be too sharp and can gouge the surface, so I take a scissors and trim that off. That’s the exposed red area you see along the edge there.

The next step is to vacuum up all this dust. Then residual powder must be wiped off the wall with a damp sponge, and you have to rinse the sponge frequently. The next step is applying a wallpaper primer. Once that’s dry, the wall is ready for wallpaper.

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