How to Seal Bamboo

Bamboo, with its inherent strength and beauty, has become a popular choice for various products. Whether it's bamboo flooring, furniture, or decor, sealing bamboo is a crucial step in ensuring its longevity and preserving its natural allure. In this comprehensive guide, we will walk you through the step-by-step process of sealing bamboo effectively, providing essential tips and techniques for maximum protection and enhanced durability.

Importance of Sealing Bamboo

  • Why Seal Bamboo: Explore the benefits of sealing bamboo, including protection against moisture, stains, and UV damage. Understand how sealing can enhance its natural beauty and prolong its lifespan.
  • Choosing the Right Sealant: there are different types of sealants suitable for bamboo, such as polyurethane, tung oil, or natural wax. Learn about their characteristics and factors to consider when selecting the appropriate sealant for your project. We'll list our favourite Bamboo sealants below and some more detail.

Polyurethane Sealant: Polyurethane sealants provide a durable and long-lasting protective layer on the bamboo surface. They offer excellent resistance to moisture, stains, and scratches. Polyurethane sealants are available in both water-based and oil-based formulations. Water-based options are low in VOCs (Volatile Organic Compounds) and have a quicker drying time, while oil-based variants tend to provide a slightly richer finish. 

Tung Oil: Tung oil is a natural, plant-derived oil that penetrates deeply into the bamboo, enhancing its natural beauty. It offers good protection against moisture and provides a warm, rich, and glossy finish. Tung oil is often preferred for its natural and eco-friendly properties, making it a popular choice for those seeking a more organic sealant option.

Natural Wax: Natural waxes, such as beeswax or carnauba wax, can be used to seal bamboo surfaces. These waxes provide a protective layer that repels moisture and enhances the bamboo's natural beauty. Natural waxes are typically applied by rubbing the wax onto the bamboo surface and buffing it to a desired sheen.

Shellac: Shellac is a resinous secretion derived from the lac beetle. It can be dissolved in alcohol to create a sealant that provides a protective coating for bamboo. Shellac offers good resistance to water and can provide a glossy finish. It is important to note that shellac is not suitable for outdoor use as it may be susceptible to UV damage.

Varnish: Varnish is a popular sealant choice for bamboo. It forms a protective layer that shields the bamboo from moisture, stains, and scratches. Varnishes are available in different finishes, such as matte, satin, or gloss, allowing you to achieve the desired look for your bamboo project. It's important to select a varnish suitable for the specific application, as some varnishes may not be suitable for high-moisture areas like bathrooms.

Step-by-Step Guide to Sealing Bamboo

  • Preparing the Bamboo Surface: Learn how to properly prepare the bamboo surface before sealing. This includes sanding the bamboo to smooth out any imperfections and ensuring a clean, dust-free surface.
  • Applying the Sealant: Follow the step-by-step instructions on applying the chosen sealant to the bamboo surface. From selecting the right tools to proper application techniques, ensure an even and thorough coverage.
  • Curing and Drying Time: Understand the importance of allowing the sealant to cure and dry properly. Learn about the recommended drying time and how to protect the bamboo during this process.
  • Multiple Coats and Sanding Between Layers: Discover the benefits of applying multiple coats of sealant to bamboo. Learn when and how to sand between layers to achieve a smooth and flawless finish.

Maintenance Recommendations

  • Maintenance Tips: Explore essential tips for maintaining sealed bamboo, including regular cleaning, avoiding harsh chemicals, and monitoring for signs of wear or damage.
  • Protection Against Sunlight: Understand the impact of sunlight on sealed bamboo and learn how to protect it from UV damage. Discover additional measures, such as window coverings or UV-blocking films, to preserve the bamboo's color and integrity.
  • Periodic Re-Sealing: Learn about the recommended timeframe for re-sealing bamboo and how to determine when it's time to refresh the sealant.


To conclude, Sealing bamboo is a vital step in preserving its beauty and enhancing its durability. By following the step-by-step process outlined in this guide and considering expert tips, you can effectively seal your bamboo projects, providing long-lasting protection and maintaining their natural allure.