How To Clean Patio Slabs With Pressure Washer

How To Clean Patio Slabs With Pressure Washer

Having a patio in our garden area adds an excellent view to your outside sitting area and makes the place less slippery when cleaned regularly.

But when these patio slabs do not have regular cleaning, the algae or moss starts to make the area slippery.

If any moss or algae build up and you are looking to eliminate them, you will need a pressure washer.

So, the question arises then how to clean patio slabs with pressure washer to make them slippery free.

You can also clean the patio without using a pressure washer, but that will take a lot of time, and it may not clean as an electric pressure washer will do its job.

How To Clean Patio Slabs With Pressure Washer

how to clean patio slab with a pressure washer Different methods are available to clean the patio with or without a pressure washer. These are through bleach, vinegar, baking soda, etc.

Step 1

Remove any obstacles like furniture, pots, umbrella, barbecue, or any other decorative item on the surface and make the patio clear. You will need a couple of things to clean the deck.

  • Now take an electric pressure washer to clean the outside area.
  • A bucket
  • Patio cleaning solution
  • Brush
  • And a hosepipe 

Step 2

Now using the brush, clean all the debris thoroughly. Now take a bucket and mix the water with patio detergent cleaner.

Step 3

Apply all the solution on the patio surface or pour it inside the pressure washer chamber. If you have applied the patio’s detergent solution, wait 10 minutes before spraying on it.

Step 4 

Now take the pressure washer machine and start spraying on the patio to apply the cleaning solution.

If you have poured the solution inside the machine, you can start cleaning the surface straightaway.

Step 5

Select the appropriate pressure from your unit to achieve the correct pressure to clean the surface.

Ensure you don’t select high pressure as it may damage the patio when spaying your deck. Using a wide fan and keeping your spray angle at 45 degrees will provide the most powerful cleaning action.

You can also use a patio cleaner to clean the surface more efficiently. These patio cleaners are used horizontally and vertically on the surface. 

Step 6

Once you have completed cleaning the patio, let the sun dry up the surface thoroughly. Turn off the machine, let the water leaves, and dry off completely.

Things To Consider Before Using Pressure Washer On Surface

Pressure washers are the easiest option to clean any hard, dirty surface, but before using them directly, you need to be careful.

Before cleaning the surface, make sure you do some testing on the patio with some low to high pressure.

A powerful pressure washer can damage the patio’s surface even if you use it on concrete. So, you have to maintain the right balance between stream pressure and angle.

Of course, the high pressure will give you maximum cleaning, but it might destroy your paving above the layer. So you have to be careful before using it directly on it.

To pressure wash your patio slabs, simply attach your pressure washer to a hose and turn it on.

Then, holding the pressure washer at a 45-degree angle, move it slowly over the surface of the slab. Be sure to keep the pressure washer moving so that you don’t damage the surface of the slab.

After you’ve finished pressure washing, rinse the slab with clean water to remove any residual soap or dirt.


A pressure washer is a great tool for cleaning patio slabs. It’s important to use the right pressure setting so that you don’t damage the surface of the slab. After pressure washing, be sure to rinse the slab with clean water.


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