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A pressure washer is a helpful tool toclean outdoor surfacesand items with minimal elbow grease.
According toConsumer Reports, South American hardwoods and pressure-treated woods are typically okay for pressure washing.
After you find the right distance and pressure prefs, work with the grain of the wood.

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Work from one side of the fence to the other.
Concrete Surfaces
Concrete driveways, patios, and sidewalks are all ideal surfaces for pressure washing.
Start by removing any debris and treating any grease stains.
Aluminum surfaces like roofs are not typically safe for pressure washing as the pressure could dent the surface.
Metal buildings, on the other hand, are likely safe for this cleaning method.
Their protective patina, sealants, and coatings can be damaged due to the high-pressure cleaning process.
Stucco
The story on whether stucco is safe for pressure washing is mixed.
For that reason, its best to consult your local exterior cleaning company.
Its always best to start with a lower psi and work your way up.
Wind up cords, disconnect external parts including extension cords, and ensure everything is stored neatly.
Finally, cover your pressure washer with a tarp or cover to avoid dust and debris from settling in.
Less sturdy glass and other delicate materials like old wood, brick, etc.
Any detergent should be rinsed from your pressure washer with every use before storing.
For a more thorough maintenance schedule, consult your user manual for best practices.
Its best to use detergents that are specifically designed for use in a pressure washer.
Consult your machines user manual for the best solution for your unit.