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Cumaru hardwood decking has become increasingly popular among homeowners, architects, and builders in recent years. Its stunning appearance, durability, and eco-friendliness make it a top choice for those looking to add a beautiful, long-lasting deck to their property. In this article, we will discuss the numerous benefits of Cumaru decking and compare it to other decking materials on the market.

Benefits of Cumaru Hardwood Decking

Durability and Strength

Cumaru hardwood is known for its exceptional strength and durability, making it an ideal choice for outdoor decking. Its dense grain structure and natural oils provide excellent resistance to wear and tear, ensuring a long lifespan for your deck. Cumaru’s impressive Janka hardness rating of 3,540 lbs makes it one of the strongest hardwoods available for decking, easily outperforming many other popular options.

Resistance to Insects, Mold, and Rot

One of the major concerns with outdoor decking materials is their susceptibility to damage from insects, mold, and rot. Cumaru’s natural oils and tannins make it highly resistant to these common problems, ensuring your deck remains in pristine condition for many years.

Low Maintenance

Cumaru decking requires minimal maintenance compared to other decking materials. Its natural resistance to insects, mold, and rot means you won’t need to apply chemical treatments or sealants regularly. Occasional cleaning with mild soap and water is usually all that’s needed to keep your Cumaru deck looking its best.

Weather Resistance

Cumaru hardwood can withstand harsh weather conditions, including extreme heat, cold, and humidity. Its natural oils help protect the wood from warping, cracking, and splitting, ensuring your deck remains structurally sound and aesthetically pleasing year after year.


Cumaru decking boasts a rich, warm color palette that ranges from reddish-brown to golden hues, providing a stunning visual appeal that complements any architectural style. Over time, the wood will gradually develop a beautiful silver-gray patina, adding character and charm to your outdoor living space.

Environmental Sustainability

Cumaru is a renewable, eco-friendly decking material. By choosing responsibly harvested Cumaru, you’re supporting sustainable forestry practices and helping to preserve our planet’s natural resources.


While Cumaru hardwood may have a higher upfront cost compared to some other decking materials, its long lifespan, low maintenance requirements, and impressive durability make it a cost-effective option in the long run. Investing in Cumaru decking can save you money on repairs, replacements, and maintenance over time.


Cumaru hardwood decking provides excellent slip resistance, making it a safer choice for areas prone to wet conditions or near pools and hot tubs. Its natural resistance to splintering also ensures a comfortable walking surface for you and your family.

Cumaru Hardwood Decking vs. Alternatives

Cumaru vs. Ipe

Ipe is another popular hardwood decking option, known for its durability and beauty. While Ipe has a slightly higher Janka hardness rating than Cumaru, the difference is minimal and both kinds of wood are extremely strong and durable. Cumaru is often more cost-effective than Ipe, making it an attractive alternative for budget-conscious homeowners.

Cumaru vs. Composite Decking

Composite decking is made from a combination of wood fibers and plastic, providing a low-maintenance and durable option. However, composite decking can be more expensive than Cumaru and lacks the natural beauty and warmth of hardwood. Additionally, Cumaru is a more eco-friendly option, as it is made from a renewable resource.

Cumaru vs. Pressure-Treated Wood

Pressure-treated wood is a popular choice for decking due to its affordability and resistance to decay and insects. However, it requires more maintenance than Cumaru and is prone to warping, cracking, and splintering. Cumaru decking offers superior durability, aesthetics, and longevity compared to pressure-treated wood.

Installation Tips

Selecting the Right Cumaru Hardwood Boards

When choosing Cumaru decking boards, look for straight, knot-free boards with consistent coloration. This will ensure a uniform appearance and minimize the chance of warping or twisting.

Proper Spacing

Cumaru decking boards should be spaced with a minimum gap of 1/4 inch between them to allow for air circulation and expansion. This will prevent moisture buildup, warping, and cupping.

Fastening Techniques

There are several fastening options for Cumaru decking, including face-screwing, hidden fasteners, and clip systems. Choose the method that best suits your needs and skill level to ensure a secure and attractive installation.


Cumaru hardwood decking offers a multitude of benefits, including durability, low maintenance, weather resistance, and stunning aesthetics. Its eco-friendliness and cost-effectiveness make it an ideal choice for homeowners looking to create a beautiful, long-lasting outdoor living space. With proper installation and care, a Cumaru deck can provide years of enjoyment and add value to your property.


Q: How long does Cumaru Hardwood Decking last?

A: Cumaru decking can last up to 50 years or more with proper maintenance and care.

Q: Do I need to seal my Cumaru Hardwood deck?

A: Sealing is not required for Cumaru decking, as its natural oils provide protection against insects, mold, and rot. However, applying a UV-blocking oil can help maintain the wood’s original color.

Q: How often should I clean my Cumaru Hardwood deck?

A: Cleaning your Cumaru deck with mild soap and water once or twice a year is usually sufficient to maintain its appearance and prevent the buildup of dirt and debris.

Q: Can Cumaru Hardwood decking be used around pools and hot tubs?

A: Yes, Cumaru’s slip-resistant surface and resistance to splintering make it an excellent choice for use around pools and hot tubs.

Q: Is Cumaru Hardwood decking sustainably harvested?

A: Responsibly harvested Cumaru is available from suppliers that adhere to sustainable forestry practices. Look for certifications such as FSC (Forest Stewardship Council) to ensure you are purchasing eco-friendly Cumaru decking.

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