Removing Pressure Washer Deck Marks (5 Simple Steps)

Published by: | Updated: February 1, 2023
JCS Refresh How To Remove Pressure Washer Marks From Deck

Without prior knowledge and training, anyone can leave streaks and marks when pressure washing. 

Honestly, there’s nothing worse than seeing this annoying damage hours after cleaning.

However, removing pressure washer marks from your deck is pretty straightforward.

In this article, we’ll provide a step-by-step guide on how to do this and cover a handful of other related questions.

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About The Author

Meet the expert behind this article. 



Co-owner & Service Director

Hey there, I’m Cody. 

A decade of residential and commercial pressure washing led me to start JCS Refresh. Now I can share my knowledge with folks like you. 

Reading from Washington State?

Contact our team for a quote and you might meet me in person.

Quick Answer

Simply remove pressure washer marks from your deck by following the steps below:

  1. Assess the damage
  2. Wear appropriate safety clothing
  3. Apply oxygen bleach
  4. Let the oxygen bleach sit for 2 to 3 hours
  5. Rinse thoroughly

Quick questions before starting

Let’s answer some quick questions before thoroughly discussing the main topic:

How difficult is this to do? Removing pressure washer marks can be easy, depending on their extent.

How long does it take? Removing marks takes four to six hours for a 500 sq. ft. deck.

How much do materials cost? The overall cost will vary, but it should be less than $50. The usual items include drop cloths and oxygen bleach.

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Items needed to repair pressure washer damage

If you’ve done a DIY project before, you likely have most of the things. 

However, we’ve still included everything you need to provide a detailed summary.

  • Safety Glasses – starts from $4 to $100
  • Earmuffs – starts from $4 to $100
  • Drop cloths – starts from $4 to $100
  • Oxygen Powder – starts from $15 to $100

How to remove pressure washer marks from a deck

In this section, let’s assume that your deck is pressure washed, and your main problem now is removing those annoying marks.

Check out the step-by-step guide below:

1. Assess the damage

Pressure washer marks can be removed using oxygen bleach. 

However, if the damage is more severe, it is best to seek the help of local experts

2. Wear appropriate clothing

A pressure washer exposes you to dirt, debris, and chemicals, so remember to wear proper attire when cleaning. 

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3. Apply the oxygen bleach 

First, wet the surface you intend to fix. Then, apply ½ cup of diluted oxygen bleach with 1 gallon of water to the marks.

Oxygen bleach is known to be safe, gentle, and biodegradable. Moreover, it’s also an alternative to chlorine bleach.

4. Let the oxygen bleach sit for 2 to 3 hours

Allow the bleach to sit on the surface for 2 to 3 hours to penetrate the deck fully.

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5. Rinse thoroughly

Rinse with an even, consistent, and gentle sweeping motion using about 800 PSI.

When doing so, keep the wand between 13-17 inches away from the surface.

Frequently asked questions

If you still have something on your mind, we have your back. 

Check out these frequently asked questions:

Why did my deck turn white after pressure washing?

A deck turns white after pressure washing when it’s weathered and gets cleaned. 

Cleaning removes an old layer of wood, which produces little raised fibers-  typically resulting in a fuzzy white exterior known as afuzzy deck.”

How do you fix fuzzy wood after pressure washing?

One way to fix “fuzzy wood” is to sand it but ensure that the surface is dry. Then utilize an orbital sander with 80-grit sandpaper. Carefully give your deck a run, and it’s gone. 

For the best result, stain and seal afterward.

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How do you treat a deck after pressure washing?

After pressure washing, it’s essential to stain and seal your deck. 

Staining and sealing provides optimal protection from moisture and sun damage while extending your deck’s lifespan.

Should I sand my deck after pressure washing?

No, you don’t need to sand every time you pressure wash.


You don’t need to be scared of pressure washer marks; our step-by-step guide is an effective method you can utilize immediately. 

However, if the damage is too severe, we strongly suggest seeking the help of those who offer deck cleaning services.

Best of luck with your next project.

We hope this article served you well!