Getting Smoothing Compound to Dry Quickly

Digital Image

Digital Image

Here in Houston, many homes have textured walls. Texture prevents good adhesion of the wallpaper, and it looks, well, it looks cheesy under the wallpaper. So I do a lot of what we call “skim floating,” to smooth the wall. This involves skimming the wall with a plaster-like substance (joint compound, also referred to as “mud”).

Nothing can progress until that mud is dry. It will dry overnight, but then the homeowner would have to pay for a second day of labor. So I try to speed the process so that everything can be done in one day. Here you see my two box fans and one heavy duty fan, all aimed at this one short accent wall. The texture was heavy, and so it took a longer than usual time for the joint compound to dry.

Turning the air conditioner down (or the heat up) and having the house fan set to “on” also helps to circulate dry air through the room and pull moisture out of the wall. In a small room like a powder room, I use a space heater and close the door to keep in the heat. I also have a heat gun that can be used to spot dry stubborn areas.

Note that the black fan and the heaters all pull a lot of power, so they cannot be used at the same time or they might trip the circuit breaker. So it becomes a juggling match of turning something on and off, moving the fans to different positions, opening the door to let hot humid air out, etc.

Once the smoothing compound is dry, I sand it, then vacuum up the dust, then wipe residual dust off the wall with a damp sponge, rinsing it frequently. Then the wall has to dry again briefly, and then the primer gets rolled on. That needs to dry for about an hour, and then the wall is finally ready for wallpaper.

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