Surface Engineered · Anti-Slip Profile

High Density Carbonized Outdoor Bamboo Flooring With Small Grooves

Grooved Surface Carbonized Wear Resistant

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Product Overview

High density carbonized outdoor bamboo flooring with small grooves is manufactured through strand weaving technology. Bamboo fibers are crushed, saturated with phenolic resin, and compressed under hydraulic pressure exceeding 1,200 tons. Carbonization at 180-200°C removes organic sugars and starches from the fiber structure. The surface features precision-milled small grooves with dimensions of 2mm width and 1mm depth, spaced at 20mm intervals across the board width. These grooves increase the friction coefficient of the walking surface. Material density ranges from 1.15 g/cm³ to 1.25 g/cm³. The thermal modification produces uniform amber color throughout the board cross-section and reduces equilibrium moisture content to 8-12%. The grooved surface profile provides mechanical slip resistance without the need for applied coatings or treatments.

Main product surface with small groove pattern

1.15-1.25 g/cm³ Density Range

≥3,000 lbf Janka Hardness

2×1 mm Groove Dimension (W×D)

20 mm Groove Spacing

Core Properties

Groove Profile for Slip Resistance

Precision-milled small grooves measuring 2mm width and 1mm depth, spaced at 20mm intervals, increase surface friction coefficient without reliance on applied coatings. The mechanical groove pattern maintains slip resistance throughout the service life of the flooring, unlike surface treatments that wear off over time. Testing under wet conditions shows coefficient of friction values exceeding 0.6 as measured by ASTM D2394.

High Density Strand Woven Construction

Compression at 1,200 tons produces material density of 1.15-1.25 g/cm³, providing resistance to indentation and surface wear from foot traffic. The strand woven structure exhibits Janka hardness exceeding 3,000 lbf, comparable to the hardest tropical hardwood species. This density also reduces moisture absorption and provides resistance to mechanical damage.

Carbonization for Stability

Thermal modification at 180-200°C removes hemicellulose and starches from the bamboo structure. This process reduces equilibrium moisture content to 8-12%, limiting hygroscopic expansion and contraction cycles. The carbonized material also exhibits resistance to fungal decay and insect attack without chemical preservatives.

Wear Resistance

The combination of high density strand woven construction and groove geometry provides abrasion resistance for outdoor decking surfaces. The groove pattern creates a textured surface that reduces point loading on the wear layer, distributing foot traffic forces across the board surface. This design extends the usable service life of the flooring in high-traffic outdoor applications.

Technical Specifications

ConstructionStrand woven bamboo with phenolic resin

Density1.15 - 1.25 g/cm³ (EN 323)

Janka Hardness≥ 3,000 lbf (ASTM D1037)

Groove Dimensions2mm width × 1mm depth

Groove Spacing20mm center to center

Carbonization Temperature180 - 200°C

Moisture Content8% - 12% at factory

Slip Resistance (wet)COF ≥ 0.6 (ASTM D2394)

Groove close-up detail

Installed application view

▸ Outdoor decking for residential and commercial projects

▸ Pool surrounds and spa areas requiring slip-resistant surfaces

▸ Commercial restaurant and café outdoor seating terraces

▸ Public boardwalks and waterfront promenade surfaces

▸ Rooftop garden decking systems

▸ Hotel and resort exterior flooring in high-humidity regions

Frequently Asked Questions

Q How does the small groove pattern affect cleaning and maintenance? ▼

The small groove pattern with 2mm width and 1mm depth is designed to facilitate cleaning while providing slip resistance. Standard deck cleaning with a soft-bristle brush and neutral pH detergent removes debris from the groove channels. Pressure washing at 5-7 MPa maximum with 300mm standoff distance effectively cleans the groove profile. The groove dimensions prevent accumulation of fine particles that would be difficult to remove, unlike deeper or wider groove patterns that trap debris. For commercial applications, quarterly cleaning maintains the slip resistance performance of the grooved surface.

Q What is the relationship between carbonization and the durability of the groove profile? ▼

Carbonization at 180-200°C reduces the moisture content of bamboo fibers to 8-12%, which decreases the dimensional movement of the material. This stability extends to the groove geometry, maintaining the precision-milled dimensions across seasonal humidity changes. The thermal treatment also removes organic compounds that would otherwise attract decay organisms, protecting the groove edges from biological degradation. The combination of high density and carbonization means the groove profile retains its dimensions and slip resistance properties throughout the service life of the flooring.

Q Does the grooved surface require specialized installation considerations? ▼

The grooved surface does not require installation modifications compared to smooth-surface bamboo decking. Boards are installed using standard hidden clip systems or face screw methods with pre-drilled countersunk holes. The groove pattern does not interfere with fastener placement or board interlocking. Joist spacing of 400mm maximum centers applies for boards with 18-20mm thickness. The groove orientation follows the board length and does not affect the structural performance of the decking. Expansion gaps of 5-6mm between board ends and 3-4mm between board edges remain necessary for thermal movement.

Q What is the expected wear resistance of the groove pattern under heavy foot traffic? ▼

The groove pattern is mechanically milled into the strand woven bamboo surface, meaning the slip resistance is integral to the board rather than applied as a coating. Wear testing under ASTM D2394 indicates groove depth retention exceeding 85% after 50,000 cycles of abrasive testing. The high density of the strand woven material at 1.15-1.25 g/cm³ provides abrasion resistance to the groove edges. In commercial installations with daily foot traffic of 500-1,000 pedestrian passes, the groove depth reduces by less than 0.2mm per year, maintaining slip resistance performance for 15-20 years before any noticeable reduction in groove depth occurs.

Ningguo Kuntai Bamboo and Wood Co., Ltd. is located in Ningguo, Xuancheng City, Anhui Province, known as the "Bamboo Village," where large quantities of bamboo plants grow. "Huihuang Bamboo," established in the year 2002, has now set up a large manufacturing site in Anhui, a modern factory named KUNTAI, which covers an area of 30,000 square meters. We are China High Density Carbonized Outdoor Bamboo Flooring With Small Grooves Anti Slip Wear Resistant Manufacturers and Custom High Density Carbonized Outdoor Bamboo Flooring With Small Grooves Anti Slip Wear Resistant Factory. KUNTAI is a professional manufacturer of outdoor strandwoven bamboo decking, bamboo flooring, bamboo wall-cladding and siding, bamboo panels, plywood, bamboo boards, bamboo timbers and beams, bamboo ceiling and roof, as well as bamboo garden furniture. We have obtained the certificates of FSC, CE, SGS, and ISO9001, ISO14001. We are the holder of a US patent for outdoor bamboo decking (No.. US11148318) and are authorized by the US patent as a manufacturer and exporter in China. Clients and customers are welcome to visit our factory.