Ipe vs Cumaru: A Comprehensive Comparison of Hardwood Decking Options

Last Updated May 8, 2025

Ipe and cumaru are both hardwoods prized for their durability, but ipe typically offers higher resistance to rot, insects, and wear, making it ideal for outdoor decking and heavy-use areas. Your choice between ipe and cumaru may depend on budget and color preference, as cumaru often has a warmer, reddish hue while ipe tends to be darker and more expensive.

Table of Comparison

Feature Ipe Cumaru
Scientific Name Handroanthus spp. Dipteryx odorata
Durability Class 1 (25+ years) Class 1 (25+ years)
Hardness (Janka) 3,680 lbf 2,690 lbf
Color Dark brown with rust undertones Golden brown to reddish brown
Density 1,010 kg/m3 970 kg/m3
Workability Hard to work, requires pre-drilling Moderate workability
Cost Higher Moderate
Common Uses Decking, outdoor furniture, flooring Decking, flooring, outdoor furniture
Resistance Highly resistant to rot, insects, weather Resistant to rot and insects, slightly less weather resistant

Introduction to Ipe and Cumaru

Ipe and Cumaru are two of the most popular tropical hardwoods used in decking and outdoor furniture, prized for their durability and natural resistance to decay. Ipe, often called Brazilian walnut, is known for its exceptional hardness, rich brown color, and high resistance to insects and weathering, making it a top choice in premium outdoor projects. Cumaru, sometimes referred to as Brazilian teak, offers a slightly lighter hue with a fine grain and similar strength and longevity, providing a cost-effective yet durable alternative for exterior applications.

Botanical Origins and Sustainability

Ipe wood, derived from the Handroanthus genus native to Central and South America, is known for its incredible density and natural resistance to decay, making it a sustainable choice when harvested responsibly. Cumaru, sourced from the Dipteryx genus primarily found in the Amazon rainforest, offers similar durability with a slightly different grain and hue, often certified under sustainable forestry programs like FSC to ensure minimal environmental impact. Choosing between Ipe and Cumaru involves considering the specific botanical origins and verifying sustainable harvesting practices to align with your ecological priorities.

Physical and Mechanical Properties

Ipe and Cumaru are both dense hardwoods known for exceptional durability and strength, making them ideal for outdoor applications like decking. Ipe typically has a Janka hardness rating around 3,680 lbf, indicating superior resistance to wear and denting compared to Cumaru's rating of approximately 2,690 lbf. Your choice between Ipe and Cumaru should consider specific project requirements for hardness, stability, and resistance to moisture and decay.

Durability and Resistance to Elements

Ipe and Cumaru are both incredibly durable hardwoods, with Ipe boasting a Janka hardness of approximately 3,680, making it one of the hardest woods available and highly resistant to scratches, rot, and insect damage. Cumaru, slightly less hard with a Janka rating around 2,690, still offers excellent resistance to decay, moisture, and UV exposure, making it ideal for outdoor applications. Both woods withstand harsh environmental conditions, but Ipe generally edges out Cumaru in long-term durability and resistance to weathering.

Color, Grain, and Aesthetic Differences

Ipe wood features rich brown tones with occasional reddish hues, while Cumaru exhibits a broader color range from golden brown to deep reddish brown, often darkening over time. The grain of Ipe is typically fine and straight, creating a smooth, uniform texture, whereas Cumaru has a more pronounced and varied grain pattern, contributing to a textured and rustic look. Aesthetically, Ipe provides a sleek, elegant finish favored for modern decking, while Cumaru offers a warm, natural appeal with its distinct grain contrasts, suitable for traditional and contemporary designs alike.

Installation Ease and Techniques

Ipe and Cumaru both offer exceptional durability for decking, but Ipe requires pre-drilling due to its density, which can slow installation, while Cumaru is slightly easier to work with using standard tools. Installing Ipe demands specialized fasteners like hidden clips or stainless steel screws to prevent splitting, whereas Cumaru often tolerates conventional decking screws with fewer complications. Your choice between these hardwoods influences installation time and technique, with Cumaru generally allowing a more straightforward process for DIY projects.

Maintenance Requirements

Ipe requires minimal maintenance due to its natural resistance to rot, insects, and weathering, making it ideal for long-lasting outdoor applications. Cumaru, while durable and resistant, needs more frequent cleaning and sealing to maintain its rich color and prevent surface wear. Choosing Ipe reduces upkeep efforts, whereas Cumaru demands a more proactive maintenance schedule to preserve its aesthetic and functional qualities.

Cost Comparison and Value

Ipe tends to have a higher upfront cost than Cumaru due to its extreme density and durability, making it a premium option for decking and outdoor projects. Cumaru offers a more affordable alternative while still providing considerable hardness and resistance to decay, which maximizes value for budget-conscious buyers. Your choice between Ipe and Cumaru should balance initial investment with long-term performance and maintenance expectations.

Common Uses and Applications

Ipe and Cumaru are both premium hardwoods widely used in outdoor decking, furniture, and landscaping due to their exceptional density and durability. Ipe's natural resistance to rot and insects makes it ideal for high-traffic decking and marine applications, while Cumaru's slightly lower hardness provides easier workability, making it popular for intricate furniture designs and interior flooring. Your choice between Ipe and Cumaru should consider the specific environmental exposure and aesthetic preferences for long-lasting, resilient wood installations.

Pros and Cons: Ipe vs Cumaru

Ipe offers exceptional durability with a Janka hardness of 3,680, making it highly resistant to scratches and decay, while Cumaru, with a Janka hardness of 3,330, is slightly more flexible and easier to work with during installation. Both woods are naturally resistant to insects and rot, but Ipe's darker, dense grain provides superior weather resistance and longevity, often lasting over 40 years without maintenance. Cumaru tends to be more affordable and has a warm golden-brown color that ages to a rich amber, although it may develop minor surface checks over time.

Ipe vs cumaru Infographic

Ipe vs Cumaru: A Comprehensive Comparison of Hardwood Decking Options


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The information provided in this document is for general informational purposes only and is not guaranteed to be complete. While we strive to ensure the accuracy of the content, we cannot guarantee that the details mentioned are up-to-date or applicable to all scenarios. Topics about Ipe vs cumaru are subject to change from time to time.

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