How to Clean Redwood Deck

Do you have a redwood deck? If so, it’s important to regularly clean and maintains it to keep it looking beautiful for years to come.

Redwood decks are a popular option for homeowners because of their natural beauty and durability. Over time, however, redwood can become dirty and stained. If you have a redwood deck, you want to clean it regularly, so it looks good and lasts for many years. Here are some tips on how to clean your redwood deck.

How to Clean Redwood Deck

This blog post will show you how to clean redwood deck using simple steps and materials. Let’s get started!

What is Redwood Deck?

Redwood is a type of wood that comes from the redwood tree, found primarily in California. Redwood has natural oils and resins that make it resistant to rot and decay, making it a great choice for outdoor decking material.

Why Clean Your Redwood Deck?

Regularly cleaning your redwood deck will prevent dirt, grime, and mildew buildup that can cause staining and damage to the wood. Cleaning your deck will also enhance its natural beauty and extend its longevity.

What You Will Need:

  1. Water hose or pressure washer
  2. Soft-bristled brush or broom
  3. Mild detergent or deck cleaner
  4. Bleach or oxalic acid

With these simple materials, you can easily clean your redwood deck and keep it looking beautiful.

10 Easy Steps on How to Clean Redwood Deck

Step 1: Use a Water Hose

To begin cleaning your redwood deck, first, use a water hose or pressure washer to remove any loose dirt or debris from the surface of the wood. This step will prevent any debris from being ground into the wood as you clean it. You can get pressure washer rentals at your local home improvement store if you do not have one. Be careful not to use too much pressure, as it can damage the wood.

Use a Water Hose

Step 2: Apply Deck Cleaner

Once the surface is clear of debris, apply a mild detergent or deck cleaner to the wood using a soft-bristled brush or broom. Use a scrubbing motion, and be sure to cover all areas of the deck. Let the cleaner sit for approximately 10 minutes before rinsing it off with a water hose. Use a scrub brush for any stubborn spots. Don’t let the cleaner dry on the wood, as it may cause damage.

Step 3: Remove Stains

If you have any stubborn stains, try using bleach or oxalic acid to remove them. Mix according to package directions and apply with a brush, scrubbing in a circular motion. Rinse off with water after letting it sit for a few minutes. Make sure to wear gloves and protective eyewear when using these harsher chemicals. Because redwood is a soft wood, it may be more susceptible to damage from harsh chemicals. Use caution and test on a small, inconspicuous area before applying it to the entire deck.

Step 4: Allow the Deck to Dry

After cleaning your redwood deck, allow it to dry completely before applying a sealant or stain. This will ensure that the wood is properly prepared for protection. Otherwise, the sealant or stain may not adhere properly and provide adequate protection for the wood.

Step 5: Apply Sealant or Stain (optional)

Once your redwood deck is clean and dry, you can apply a sealant or stain to protect the wood and enhance its natural beauty. Follow package directions for application and drying times. Because redwood has natural oils and resins that protect it from decay, sealant or stain may not be necessary.

Apply Sealant or Stain

Step 6: Resealant or Stain Regularly

To maintain the beauty and protection of your redwood deck, make sure to reapply sealant or stain every 1-2 years or as needed. You can tell when it is time for a new coat by checking for wear or fading in the wood’s appearance.

Step 7: Regular Cleaning

Remember to clean your redwood deck regularly to maintain its beauty and longevity. Sweep off debris and dirt at least once a week, and give it a thorough cleaning with detergent or deck cleaner every few months. Following these steps will keep your redwood deck looking beautiful for many years to come.

Step 8: Protect Your Redwood Deck

In addition to regular cleaning, be sure to protect your redwood deck from excess moisture and water damage. This can include placing mats or rugs at entryways to prevent tracking in excess moisture, using furniture pads under heavy items such as grills or chairs, and making sure gutters and downspouts are directing water away from the deck.

Protect Your Redwood Deck  From Water Damage

Step 9: Repair Damage

If your redwood deck does sustain damage, it is important to repair it as soon as possible to prevent further damage and decay. This can include filling in cracks or chips with wood filler and sanding down rough patches. It may also be necessary to replace boards that have sustained significant damage.

Step 10: Call a Professional

If you are unsure of how to clean and maintain your redwood deck properly or if it has sustained significant damage, it is always a good idea to call a professional for help. They will have the knowledge and expertise to ensure that your redwood deck is properly cared for and maintained.

Following these steps will keep your redwood deck looking beautiful for many years to come. Happy cleaning!

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7 Additional Tips and Tricks

  1. If using a pressure washer to clean, use the lowest setting for redwood to avoid damaging the wood.
  2. Use a scrub brush or broom instead of a wire brush to avoid scratching the deck’s surface.
  3. Clean in sections and allow time for each section to dry before moving on to the next.
  4. After cleaning, apply a redwood deck sealer or stain to protect the wood and maintain its appearance.
  5. Regularly sweep and remove debris to prevent build-up and make future cleanings easier.
  6. Consider using natural or eco-friendly cleaners to avoid harsh chemicals on the wood and in the environment.
  7. Use a garden hose with a spray nozzle for spot cleaning rather than using a bucket of water, which can be heavy and difficult to maneuver on the deck.

I hope these tips and tricks help make cleaning and maintaining your redwood deck a breeze! Happy cleaning!

Can You Apply Different Colours on Redwood Deck?

It is possible to apply different colors on a redwood deck, but it is important to note that the natural color of redwood can sometimes show through stains or sealers. It is also important to make sure the wood is properly prepared before applying any stain or sealant to ensure proper adhesion and protection.

Additionally, remember to clean and reseal or stain as needed to maintain the appearance of the colored finish. It is also recommended to consult a professional for specific instructions and recommendations for staining your redwood deck.

Apply Different Colors on Redwood Deck

What Are the Things That Turn Your Redwood Deck Black?

One common culprit is the tannins that leech out of redwood and cedar. Tannins are natural compounds found in many types of wood and can leave behind unsightly black or gray stains on decks and outdoor furnishings.

Another potential cause of discoloration is mold or mildew growth, which can thrive in damp and shaded areas on the deck.

To clean these types of stains, you will need to use a specialized deck cleaner or a mixture of bleach and water. It is important to test any cleaning solution on a small, hidden area before applying it to the entire surface.

Once the stains have been treated, be sure to regularly clean and maintain the deck to prevent future discoloration. This can include sweeping away debris, removing any standing water, and applying a protective sealant to the wood.

Always use caution when handling cleaning solutions and follow manufacturer instructions for proper application and safety measures.

What is Harmful to the Redwood Deck?

Harsh chemicals and abrasive cleansers can be harmful to a redwood deck, causing damage to the wood. Avoid using bleach or harsh acids, such as vinegar or citrus cleaners, as these can strip the wood of its natural oils and lead to drying and cracking.

It is best to use a specifically designed deck cleaner or a mixture of mild soap and water for cleaning. Remember to always test any cleaner in a small, hidden area before applying it to the entire surface.

UV rays from prolonged exposure to sunlight can also damage redwood, causing fading and cracking. Consider using umbrellas or shade structures to protect the deck from excessive sunlight, and regularly apply a sealant or stain to protect the wood.

Other potential hazards include standing water, which can lead to mold and mildew growth, and heavy objects that could dent or crack the wood.


Deck owners should rest easy knowing that their decks can look as good as new with some elbow grease and the right cleaners. Be sure to always test cleaners in a small, inconspicuous area before treating the entire deck. With proper care and cleaning, any redwood deck can be an oasis for its owner year-round. 

This blog post can help you know how to clean redwood deck, what things can cause discoloration, and what may be harmful to the wood. Hopefully, these tips and tricks help make cleaning and maintaining your redwood deck a breeze! With a little patience and the right approach, your deck can stay looking beautiful for years to come. Happy cleaning!

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Adrian Green

Adrian has been interested in woodworking since he was a child. His father had a woodworking shop, and Adrian would help him out and learn from him. He gained basic carpentry knowledge as well as an understanding of how to work hard and take care of business. He enjoys woodworking as a hobby. He loves the feeling of creating something with his own hands, and the satisfaction that comes from seeing his finished products used by others. So he started this blog to spread his passion and knowledge to those interested in DIY wood-working projects. He knows that with a little guidance and practice, anyone can create beautiful pieces of furniture or décor from scratch.

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