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How to Clean a Wood Fence with a Pressure Washer: 5 Simple Steps

How To Clean A Wood Fence With A Pressure Washer?

Wooden fences are often neglected because they require little maintenance. However, these attractive structures can quickly accumulate dirt, dust, leaves, and other debris if not cleaned regularly. Cleaning a wood fence with a pressure washer is easy to do if you follow these steps!

Preparation before cleaning a wood fence with a pressure washer 

Before cleaning your fence, make sure it is entirely prepared. To do so, begin by wire brushing filthy regions of your fence. It will remove any heavy or embedded debris. Next, if plants or grass surround it, cover them with a plastic sheet to keep them safe.

How To Clean A Wood Fence With A Pressure Washer 

Cleaning a wood fence with a pressure washer only requires the following steps:

Step 1

First, prepare your outdoor hose and attach it to the water faucet. Ensure that the end of your hose is attached to a nearby fixture or another source of running water. Then cover plants surrounding the area in which you’re working.

Step 2

Next, mix your detergent according to the instructions and fill a bucket with half of that amount. You can then pour it into one compartment of the pressure washer’s soap dispenser if one is available or directly onto your fence.

Step 3

Apply pressure to your hose so that water exits the sprayer at a consistent rate. Then, run it over your fence while spraying detergent all along its length. 

Ensure that you clean both sides of each slat and that any leaves or other debris are dislodged by either brushing them away with a broom or scrubbing them off with a wire brush.

Step 4

Next, run your pressure washer over the fence again to rinse away any detergent that might still be present. If you have a soap dispenser with multiple compartments, fill one with clean water and empty another onto your fence. It can help flush any dirt or debris stuck between the slats.

Step 5

Finally, allow your fence to dry completely and then inspect it for any spots you might have missed, repeating the process as necessary.

Once your fence has dried off, apply a fresh coat of paint if needed, or leave it alone!

If you follow these steps, it would be easy to clean a wood fence with a pressure washer once you get started.

How to Get Rid of Stubborn Mold, Algae, Moss, and Mildew

After pressure washing or handwashing your wooden fence, you may still have mold, mildew, or algae on it. If this is the case, here’s how to get rid of them:

Mold and Algae Removal

Mold and algae can harm your wood fence, and even if you clear them away, they may leave green stains behind. To eliminate these formations, 

  • Combine one part chlorine bleach with two parts water in a bowl. 
  • Use a plastic bristle brush and this solution to remove mold or algae from your fence. 
  • Rinse off all areas where you removed the mold or algae with your garden hose after you’ve gotten them up.

Moss and Mildew Removal

Like mold and algae, moss and mildew can damage and mar your fence. The technique to eliminate these formations is somewhat unique, however. 

  • You may use a solution of half cup vinegar and 1-gallon water to remove moss and mildew from your wood fence. 
  • Apply the solution to the wooden fence with a sponge and let it sit for 15 minutes. 
  • After that, you’ll scrub away the moss or mildew using a plastic bristle brush. 
  • At the end of the process, rinse off any areas you cleaned with your garden hose.

Tips for Cleaning a Wood Fence with a Pressure Washer

  • For fence washing, a 25-degree nozzle works well. The pressure of the nozzles is determined by degrees. Therefore a 0-degree nozzle delivers the most pressure. Each degree on each nozzle has its color code, with black most.
  • A 25-degree nozzle delivers a solid but low-pressure spray, which works well for cleaning wood fences with a pressure washer. The 0-degree nozzle is mighty and can damage your fence if you misuse it! 
  • A workable solution is to use a garden hose to wash off dirt or debris. That might have collected on the fence before applying detergent since high-pressure water can damage it if applied directly. It will save time overall and help prevent any damage to your fence.
  • Finally, you must keep safety in mind when cleaning a wood fence with a pressure washer! Since most of these devices are incredibly powerful and can easily strip paint off the surface of your fencing. If misused, they should only be operated by trained professionals or someone who has had experience using them before.

How often you should clean a wood fence with a pressure washer

It would be best if you cleaned your wooden fence with a pressure washer on an annual basis to get rid of any dirt, mildew, or other stains that might have built up over time. 

You can also do so if it needs fresh paint since this will help preserve its appearance and prevent the wood from rotting at the joints where they meet together.

For how long you should clean a wood fence with a pressure washer

If you’re using the correct nozzle and setting, it shouldn’t take more than 20 minutes to wash your wooden fencing thoroughly. It will vary depending on how large of an area you are cleaning. So be sure to factor this into your estimations.

Wrap Up – How To Clean A Wood Fence With A Pressure Washer

When you’re finished, your wood fence will be gleaming and ready to show off. Now that you know how easy it is to clean a wooden fence with a pressure washer, why not try it by yourself and impress your neighbor!


Is it possible to clean the fence with bleach?

A wooden fence not only protects you from prying eyes but also adds to the beauty of your yard. Cleaning your fence with household bleach will brighten the wood, remove mold or mildew stains, and restore its appealing look.

What is the ideal PSI for cleaning my fence?

To properly clean a wood fence, you’ll need at least 1800 PSI. You can use portable pressure washers like Karcher K1800 to do this job. 

Is it possible to pressure wash a wooden fence?

Yes, wooden fences may be pressure washed using a lower PSI to avoid damaging the wood.

What is the most delicate detergent for a clean fence?

The Simple Green Oxy Solve Deck and Fence Cleaner are ideal for both hands and pressure washing to loosen and remove dirt and grime from fences.

The concentrated foam solution removes stubborn stains from mold and mildew, tree sap, pollen, scuff marks, oxidation, weather on metal surfaces. It uses peroxide to create high-performance cleaning without abrasive chemicals.

Last update on 2022-01-03 / Affiliate links / Images from Amazon Product Advertising API

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Brett Tyler

Brett Tyler

I’m Brett Tyler, an entrepreneur, but more importantly (well, to me at least), a tool head. I’m passionate about all sorts of machines and how they work – it’s in my blood.

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