Lee Roy Jordan Lumber

How to Treat Bamboo for Outdoor Use

Moso bamboo, widely known for its incredible growth rate and strength, has become an increasingly popular choice for outdoor decks and siding. This sustainable and eco-friendly material possesses remarkable durability, but to ensure its longevity and resistance against weather elements, proper treatment is crucial.

In this article, we will guide you through the essential steps of treating Moso bamboo for outdoor decks and siding, providing valuable insights on maintenance techniques to protect and preserve its natural beauty.

How to treat bamboo for outdoor use
Moso bamboo decking

Why Moso Bamboo is a Great Choice

It is a durable and sustainable material, making it an excellent choice for outdoor decking and siding projects.

Unlike traditional wood species, Moso bamboo possesses greater strength and stability, allowing it to withstand harsh outdoor elements such as rain, snow, and extreme temperatures.

This bamboo is also resistant to pests, decay, and fungi, making it a low-maintenance option that requires fewer treatments and replacements over time.

Furthermore, since bamboo grows much faster than traditional wood species, it is a more sustainable choice for the environment. By using Moso for decking and siding projects, you enhance your outdoor space while minimizing your impact on the environment.

Preparing the Bamboo

Before treatment, it is important to prepare the bamboo properly:

Brush off any loose dirt or debris using a soft-bristle brush or broom. This will help to ensure thorough treatment and prevent dirt particles from getting trapped in the bamboo during the process.

Rinse the bamboo with clean water to remove any remaining dirt or dust. Allow the bamboo to dry completely before proceeding to the treatment stage.

Treating Moso Bamboo for Outdoor Use

To effectively treat Moso bamboo for outdoor decks and siding, follow these steps:

Apply an appropriate wood preservative or bamboo treatment using a brush or sprayer. Make sure to choose a product specifically formulated for outdoor use and suitable for bamboo materials. Choose a water based oil treatment such as WOCA decking oil or Sikkens Cetol WF 771.

Ensure even coverage by applying the treatment to all sides of the bamboo, paying extra attention to the end-grains. This step is crucial in preventing moisture absorption and potential decay.

Allow the treatment to fully penetrate the bamboo according to the manufacturer’s instructions. This usually requires a waiting period of a few days for maximum effectiveness.

Once the treatment is complete, inspect the bamboo for any missed spots or areas that require additional attention. Touch up as necessary for consistent coverage.

Check out our decking service page for more information.

Ongoing Maintenance and Protection

moso bamboo siding
MOSO bamboo siding

To maintain the appearance and maximize the lifespan of your Moso bamboo outdoor decks and siding, regular maintenance is essential. Implement the following techniques for ongoing care:

Regularly clean the bamboo surfaces with a mild detergent and water solution. Gently scrub away any dirt or stains using a soft brush or cloth. Rinse thoroughly and allow the bamboo to dry completely.

It is not recommended to use a pressure washer. The force of the presser washer will damage your decking or siding.

Perform routine inspections for signs of damage, such as cracks, splintering, or loose fasteners. Promptly address any issues to prevent further deterioration and maintain the structural integrity of your bamboo.

Periodically reapply a protective sealant or bamboo-specific oil to enhance longevity and resistance against weather conditions. Consult with the manufacturer or a bamboo specialist to select the most suitable product for your specific type of Moso bamboo.

Check out our siding page to learn more about bamboo and other siding options.


When properly treated and maintained, Moso bamboo will withstand the challenges of outdoor environments, making it an excellent choice for decks and siding. By following the steps outlined in this article and implementing regular maintenance practices, you can enjoy the beauty and durability of your Moso bamboo for many years to come.

Remember, treating Moso bamboo for outdoor use not only protects your investment but also contributes to a more sustainable and environmentally-friendly outdoor space.

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