How to Wet Sand Drywall Mud


Sanding drywall mud after it has set-up and dried is a messy and dusty process. One way to limit the dust and mess is to wet sand the drywall mud. Wet sanding involves the use of a special type sponge and water to smooth out the mud and create clean lines on the wall. The wet sanding will not eliminate the mess but will help limit the mess.

Things You'll Need

  • Drywall sponge/wet sander
  • Bucket of warm water
  • Make sure the drywall mud is set and ready to be sanded as per the manufacturer of the drywall mud.

  • Wet the drywall sponge and wring it out in a bucket of warm water. You want to have the sponge wet but not soaking wet or you may damage the actual drywall board.

  • Sand the mud parallel to how it is placed on the wall. This will allow for a smooth finish and will not cause cross marks or gauges.

  • Apply a second coat of mud when the wall is dry and repeat the above steps.

  • When completely finished clean up any drywall mud that may have fallen on the floor.

Tips & Warnings

  • Work slow and controlled as not to remove too much drywall mud.
  • Wear a dust mask and eye protection to keep dust out of your lungs and eyes.

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  • Photo Credit drywall worker image by Sherri Camp from
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