Do's and Don't When Power Washing


Wear Protective Gear



  • DO wear proper eye, face and hand protection when operating the equipment and power washing.
  • DO attach nozzles and/or accessories completely before starting the machine.

Keep Hands and Feet Clear



  • DO keep hands and feet clear of the cleaning nozzle at all times.
  • DO consider using a special cleaning agent if the surface shows heavy dirt and grime.

Distance Between the Spray Head and the Surface


  • DO follow the equipment manufacturer's directions with respect to distance between the spray head and the surface -- typically 6" to 10" while power washing, although this varies with the PSI and spray width settings. (Moving too close may harm the surface; staying too far away may be ineffective.).
  • DO work from the top of the wall to the bottom, rather than vice versa. Otherwise, dirt and mildew will run down over the already-cleaned section.
  • DO direct the water at a downward arc when cleaning wood substrates. Spraying wood head-on can damage the siding.
  • DO power-wash the surface thoroughly.
  • DON'T fill the fuel tank while the engine is running
  • DON'T leave the nozzle in a closed position for more than a minute or two while the equipment is running. The pump may overheat.
  • DON'T try to repair a leak in the hose or connection while the system is under pressure.
  • ON'T aim the power washer at an upward angle when cleaning lap siding. This can drive water behind the siding. Also, the force of the water can lift the siding from the wall.
  • DON'T spray stucco, brick or masonry walls straight on. The force of the spray can cause water to penetrate cracks in the walls and cause damage within.
  • DON'T aim the spray at windows or glass doors. The force is strong enough to shatter them.
  • DON'T let the machine run for several minutes without pulling the trigger gun.
  • DON'T point the wand to an animal or a person during the power washing process.