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Cumaru – Brazilian Hardwood

Cumaru has a warm reddish-brown to golden-brown color with a straight and uniform wood grain. It is also known as Brazilian Teak. When left untreated, Cumaru gradually weathers to an elegant silver-gray tone.

Cumaru in short

🌍 South America (Brazil)
🏠 Indoor and outdoor use
🛒 Facade, ceiling, roof, terrace, fence, canopy, posts and stairs
🎨 Reddish-brown → golden-brown → silver-green when weathered
🔥 Class B/D
💰 From €80 to €110 per m² excl. VAT
Extremely strong
Durability class 1
Stable
Low maintenance
More expensive
Limited availability

Cumaru products

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The characteristics of Cumaru wood

Durability class 1

  • Cumaru is one of the hardest and most durable hardwood species in the world.

  • The wood is naturally resistant to moisture, fungi, rot, and wood-boring insects.

  • Thanks to its straight and dense grain structure, Cumaru has a long, low-maintenance lifespan and is highly suitable for a wide range of climates and applications, including marine environments.

High-end aesthetics

  • Cumaru has a warm reddish-brown to golden-brown color with a straight, fine grain. This gives the wood a luxurious and elegant appearance.

  • When exposed to sunlight, the color deepens, and when left untreated, the wood gradually weathers to a stylish silver-gray tone.

  • The wood is virtually free of knots and other defects, making it low-maintenance and visually appealing.

Also available: Finger-jointed Laminated Cumaru

  • Finger-jointed and laminated Cumaru consists of smaller pieces of Cumaru wood that are glued and laminated into a straight, stable beam. This construction reduces warping and cracking, making it highly suitable for structural applications such as decking, pergolas, stairs, and other outdoor projects.

  • Finger-jointed Cumaru is often used as substructure beams for decking or as load-bearing beams in heavy constructions, where both strength and durability are essential.

Advantages and disadvantages

  • One of the strongest and most durable hardwood species in the world.

  • Free of knots and defects.

  • FSC-certified and sustainably sourced.

  • Available in various thicknesses, widths, and lengths.

  • Planed cladding boards and decking boards available from stock.

  • Low maintenance and extremely durable.

  • May still move (natural wood movement).

  • Longer lengths are more prone to warping.

Dimensions

  • Planed and available from stock: 19, 21 and 25 mm thick, 120, 140 and 190 mm wide

  • Thicknesses: from 19 mm to 105 mm

  • Lengths: up to 6700 mm

  • Widths: from 58 mm to 335 mm

Treatment

  • When left untreated, Cumaru gradually weathers to a stylish silver-gray tone.

  • Various treatments are available to preserve its warm reddish-brown to golden-brown color, such as exterior oil, which maintains the wood’s natural appearance. The wood can also be treated with a stain.

  • Impregnation: An alternative method to prevent the wood from graying is pressure impregnation.

  • Regular cleaning and re-oiling extend the wood’s aesthetic lifespan and preserve its luxurious appearance for many years.

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