How to Wash a Stone Wall

If you have a stone wall that has been severely weathered or you need to prepare the wall to be painted, you need to give it a good washing to restore it back to its original condition. One option is sandblasting the wall, but an easier alternative is to pressure wash the wall. Follow the steps below to use a pressure washer to wash your stone wall.

Difficulty: Moderately Easy

Instructions

Things You'll Need:

• Hammer or air compressor
• Pressure washer

1. Use a hammer or air compressor to remove any pointing or render on your stone wall before beginning to wash it.

2. Rent, borrow or buy a pressure washer that you can use to wash your stone wall.

3. Turn on the power washer and stand a short distance away from the surface so you can get a feel of how the power washer works. Move closer to the wall so you can get a good wash.

4. Start at the top of one section of the stone wall and, standing fairly close to the wall, begin washing the stone wall with the power washer. Use a continuous movement that moves across the length of the stone, slowly moving down toward the bottom of the stone wall.

5. Stand back further and go over the section of the stone wall again to apply a lighter pressure washing to the stone wall. Start at the top, just like before, moving the spray of water down in waves.

6. Go over any spots that don't appear to be clean by using strong circular motions to remove the debris.

7. Move on to the next section of wall and continue in the same process, moving from one section to the next until the whole stone wall is clean.