Grey composite decking board - 2.9m

Build your outdoor decking space with our 2.9m grey composite decking boards. Our boards are designed specifically to endure the variable British weather, our high-density wood-plastic composite (WPC) boards deliver the authentic aesthetic of natural timber without the splitting, rotting, or relentless staining.

Our 2.9m length offers an ideal balance for standard British garden footprints, patio extensions, and balcony layouts—reducing job-site cutting waste and simplifying transportation. Here you find our modern tone grey; the board features a reversible surface—giving you the choice between a natural deep-embossed woodgrain pattern and a classic high-traction grooved finish.

Key features

• Product: Grey composite decking board - 2.9m

• Type: Decking (composite)

• Colour: Grey

• Length options available: 2.9m, 3.6m, 4m

• Board Dimensions: 145mm Width × 21mm Depth

• Board Area Coverage: 0.42 m² per board (based on 145mm width + 5mm clip gap)

• Material Composition: 55% Hardwood Fibres, 35% Recycled High-Density Polyethene (HDPE), 10% UV Stabilisers & Bonding Agents

• Slip Resistance: Low Slip Potential (BS 7976-2 Pendulum Test Compliant)

• Warranty Coverage: 10-Year Residential Structural Warranty

• Price range: £15.88 (inc. VAT)

• Delivery: free delivery available - *see more details

Selecting your Structure: Hollow vs. Solid Composite Decking Boards

Choosing between hollow and solid decking boards depends on the weight load, layout, and budget of your project:

• 2.9m Hollow Honeycomb Boards (21mm): Engineered with internal channels that reduce board weight while preserving structural integrity. Ideal for residential patios, garden dining areas, and raised domestic decks. The manageable 2.9m length makes single-person handling and alignment during DIY installation straightforward.

• Solid Composite Boards: Recommended for heavy-traffic commercial installations, perimeter picture framing, or areas supporting substantial static loads such as hot tubs and heavy brick outdoor kitchens.

Choosing Your Shade: Light Ash vs. Dark Anthracite

• Light Grey / Ash: Ideal for smaller gardens, shaded courtyards, or south-facing decks. Lighter greys reflect more natural sunlight, keeping the deck cooler underfoot during peak summer days while creating a clean, modern contrast against dark garden foliage.

• Anthracite / Dark Charcoal: Provides a bold, architectural edge that matches modern bi-fold door frames, dark rendering, and contemporary fencing. Darker tones naturally conceal foot traffic marks, making them a practical choice for high-use garden entryways.

Decking Routine Maintenance & Care

Composite decking does not require sanding, sealing, or painting, but periodic cleaning keeps the surface free of organic debris and dirt buildup: