Cumaru Hardwood Decking Board 21x145x2750

Cumaru hardwood decking boards are an exceptional exotic wood, known for their strength, excellent stability, impact resistance, and durability. Thanks to its unique texture and rich yellowish-brown color, this wood is one of the most popular choices for decks. Cumaru is also known as “Brazilian Teak” due to its exceptional properties and resistance to environmental factors. It is resistant to moisture, rot, insects, and changing weather conditions, making it perfect for outdoor spaces.

Cumaru is one of the hardest and most durable wood species in the world. It boasts high density and natural oils, ensuring resistance to environmental impact without additional impregnation. This wood is ideal for both residential and commercial spaces requiring an exceptionally reliable surface.

Characteristics.

This hardwood species stands out not only for its strength but also for its elegant design. Cumaru hardwood boards are stable, resistant to deformation, and due to their density, they absorb very little moisture. The wood has a uniform color, is protected from pests and rot, so it doesn’t require chemical treatment. It’s also highly resistant to impacts and abrasion, making it perfect for high-traffic areas.

Features.

The unique characteristic of the wood itself is its interlocked grain, which creates distinctive patterns.
It is long-lasting, serving 25 years or more, even without additional treatment.
Resistance to environmental factors: moisture, cold, UV rays, mold, and insects.
Features high density – extremely hard wood, 2.5 times stronger than oak.
Pleasant vanilla scent, a natural wood property.
Easy to work with: perfectly suited for decks, veranda floors, pool areas, and the construction of piers and outdoor furniture.

Cumaru Hardwood Decking Boards: Maintenance.

It is recommended to apply WOCA natural color oil or WOCA pigmented oil once a year to preserve and emphasize the natural color of CUMARU wood. Oiled boards also crack less.

Installation.

It is recommended to double the lags at the front and back of the structure (10 – 20cm second lag from the first), and the following gaps between the lags are 35 – 40 cm to control the curling of the ends of the boards. Doubling lages is also mandatory in the joining lines of boards. For fastening, A4 direct fastenings through the top of the board, invisible stainless steel invisible fastenings such as CAMO or Fastshifter, and special invisible fastening from below can be used. The recommended space between the boards is 7 mm ( a spacer is used).

It is recommended to pre-drill the screw holes to prevent splitting and cracking. Use only stainless steel screws or fasteners . Avoid contact with corrosive metal objects, which can cause hard-to-remove blue-black stains on the wood.

Fasteners recommended by MDS experts:

Hidden fastening for wooden joists

Hidden fastening clip – universal (for wooden hardwood, thermo, or aluminum joists)

Expandet A4 4.8×75 – directly through the top of the board

Recommendations.

Leave gaps between boards (about 7 mm) to ensure proper ventilation and natural wood movement.
Use hidden fasteners with stainless steel screws.
Before installation, it is advisable to acclimatize the boards to outdoor conditions.
If using top-down screw fastening systems, it is important to use high-quality, corrosion-resistant screws.

Applications.

Cumaru hardwood decking boards are a universal choice suitable for both private and commercial spaces:
For decks – provides an elegant, natural look.
For public spaces – cafes, restaurant outdoor terraces, and park furniture.
For pool areas and spas – moisture resistance and non-slip texture ensure safety.
For bridges, pedestrian crossings, and park paths – withstands heavy loads and adverse weather conditions.
For pier and boat deck construction – due to its moisture resistance and long service life.