Are grey composite decking boards slippery when wet?

No. These boards feature an anti-slip high-traction textured coating on both faces, making them exceptionally safe in wet UK weather, frost, and high-moisture pool or hot tub surrounds.

How many grey decking boards do I need per square metre?

Each 3.6m x 150mm board covers 0.54m². You need approximately 1.85 boards per square metre (m²), plus an extra 5% for off-cuts and wastage. Use our coverage calculator on this page for exact calculations.

Do grey composite decking boards fade in UV sunlight?

No. The boards are manufactured with advanced UV-stabilised anti-fading inhibitors that heavily resist solar bleaching, retaining their clean, rich slate and light grey finish season after season without oiling or staining.

Can you lay grey composite decking over existing concrete or patio slabs?

Yes, you can lay composite decking over concrete or existing patio slabs provided you construct a proper timber, aluminium, or composite subframe with suitable joist pedestals to ensure adequate air circulation and water drainage.

What warranty do these grey composite decking boards come with?

All premium composite decking boards from Paving and Slabs Ltd carry an 8-year structural warranty against splitting, cracking, rot, warping, and structural breakdown.

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Premium Composite Decking Board Grey (3600x150x25MM)

Q: What size are the grey composite decking boards?

Each board measures 3600 mm (3.6m) length × 150 mm width × 25 mm thickness, covering 0.54 m² per plank for residential and commercial deck builds.

Q: How do you stop rats and mice under composite decking?

Prevent rodents under decking by laying fine galvanized wire mesh or pest netting beneath the subframe joists during installation, eliminating gaps along perimeter gravel boards and keeping sub-deck clearance clear of food waste.

Premium Composite Decking Board Grey (3600x150x25MM)

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Size and Packaging 3600 MM x 150 MM x 25 MM

Quantity

Premium Grey Composite Decking Boards 3.6m

Non-Slip WPC Grey Decking UK · 3600 × 150 × 25 mm · Reversible Light & Dark Grey Planks

8-Year Manufacturer Warranty: Guaranteed against splitting, cracking, rot, warping, and structural breakdown.

✓ Reversible double-sided profile ✓ Anti-slip high traction ✓ UV-resistant capping ✓ Rot & damp-proof WPC ✓ Pool & balcony safe ✓ 8-year guarantee

COMPOSITE DECKING COVERAGE CALCULATOR Enter your deck length and width — calculate exact boards and total price

Deck Length

m

Deck Width

m

Add 5% for off-cuts & wastage Recommended — covers board spacing, edge trims & corner cuts

↑ Enter your patio deck dimensions above to estimate cost

Total coverage area —

Boards required 0 × 3.6m boards

Decking boards cost —

ESTIMATED TOTAL COST £0.00

Establish a timeless, highly sophisticated outdoor relaxation space with premium Grey Composite Decking Boards, exclusively supplied by Paving and Slabs Ltd. Expertly tailored to complement both ultra-modern urban spaces and rustic country properties across Great Britain—from Bournemouth, Leeds, and Aberdeen to Chelmsford and Dorset—these classic grey deck boards provide a stellar neutral architectural base, uniting high-impact material durability with effortless, low-maintenance longevity for garden patios, raised verandas, balconies, steps, and walkways.

Grey Composite Decking Technical & Specification Summary

Primary Materials: Recycled natural wood fibres & non-toxic dense polymers (WPC).
Layout Flexibility: Reversible dual-profile design (embossed woodgrain / linear grooved).
Safety Rating: High-grip anti-slip coating optimized for wet pool surrounds and steps.
Weather Resistance: Impervious to rain, frost, UV fading, rot, warping, and seasonal cracking.

Grey WPC Decking Key Performance Benefits

Reversible Dual-Surface Finish: Switch between realistic embossed timber woodgrain and sleek linear grooved patterns for custom styling.
Non-Slip Anti-Traction Surface: High-friction safety profile engineered to prevent slips in wet, frosty UK weather conditions.
UV Shield Protection: Fortified with advanced anti-fading inhibitors to resist solar bleaching in full garden exposure.
Zero Rot or Splintering: High-density composite core resists water absorption, fungal decay, and structural breakdown.
Low Maintenance Upkeep: Requires no oiling, sealing, or staining—cleans easily with warm soapy water or light washing.

A Refined, Reversible Neutral Base for High-End Design

The elegant light grey and dark grey colour tones serve as a versatile neutral foundation, knitting together exterior brickwork, masonry borders, and contemporary garden furniture. Featuring a reversible dual-profile structure, you can showcase the organic embossed woodgrain texture upward to capture the warm visual character of traditional timber, or reverse the planks to present a sleek grooved contemporary surface for clean architectural styling. Manufactured from recycled timber fibres and dense polymers, this Wood Plastic Composite (WPC) framework is splinter-free, scratch-resistant, and structurally rigid under heavy foot traffic.

Weatherproof Capped WPC Material Built for the British Climate

Traditional timber decking quickly absorbs moisture during UK winters, causing board rot, warping, structural decay, and slippery algae buildup. Our grey plastic WPC deck boards resolve these maintenance issues completely. The dense composite core acts as an impermeable barrier against water ingress, keeping damp rot and wood-boring pests out. Comparing flooring solutions for your outdoor build? Read our complete analysis in our composite decking vs patio slabs cost comparison guide or explore layout ideas in our overview on best garden designs for 2025/2026.

Seamless Hidden T-Clip Systems & Subframe Installation

Installation is straight-forward using hidden fastening T-clips anchored into side channels, creating a smooth, fastener-free barefoot walking surface with correct board expansion gaps. Our grey decking boards can be installed on timber joists, aluminium frames, or plastic subframes, and laid over concrete bases or existing paving slabs using pedestals. Complete your deck design using matching composite corner trims, angle trims, and composite fencing kits:

Technical Specifications

Core Composite Matrix	Eco-Conscious Wood Plastic Composite (WPC) — Recycled wood fiber & polymer blend
Board Dimensions	3600 mm (Length) × 150 mm (Width) × 25 mm (Thickness)
Coverage Area	0.54 m² per board plank (Approx. 1.85 boards per m²)
Surface Finish	Reversible dual-sided — Capped natural wood grain / Fine linear grooved pattern
Safety Rating	Anti-Slip High-Traction Surface Finish (Safe for Pools, Hot Tubs & Steps)
Routine Maintenance	Zero oils, stains, or sealers required; simple wash with warm soapy water when needed
Guarantee	8-Year Structural Warranty against rot, decay, warping, splitting, and core failure

Frequently Asked Questions

What size are the grey composite decking boards?

Each board measures 3600 mm × 150 mm × 25 mm (3.6m length), covering 0.54 m² per plank. They are ideal for residential garden decks, elevated balconies, and commercial projects.

Are grey WPC boards slippery when wet or frosted?

No. Both faces feature an anti-slip high-traction textured finish, providing safe grip during rain, frost, and near wet areas like swimming pools or hot tubs.

How do you stop rats and mice under composite decking?

To prevent rats under decking, install fine galvanized pest mesh or wire netting across the subframe base before securing boards. Ensure perimeter composite gravel boards or edge trims leave no openings, and keep the sub-deck area clear of organic waste.

Can you lay grey composite decking on existing concrete or patio slabs?

Yes. Composite decking can be installed directly over existing concrete bases or patio slabs by constructing a low-profile subframe using timber, aluminium, or plastic joists with support pedestals to allow proper water drainage and airflow.

Do grey composite boards require staining or painting?

Never. WPC decking boards require no painting, staining, oiling, or waterproofing. Cleaning with warm soapy water or a light pressure wash keeps the grey colour looking fresh.

How many decking boards do I need for my garden project?

Each 3.6m board covers 0.54 m². Divide your total deck square metres by 0.54 and add 5% for cut off-cuts. Use our calculator at the top of this page for instant estimates.

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