Accoya Bench Board – Slate Grey

From $74.80 per piece $31.17 per lineal metre

In stock • Order now

Legendary World No. 1 tennis player PAT RAFTER chooses SDS Australia because quality matters.

Architectural Australian Timber

Slate Grey Accoya Bench Board & Decking combines the proven performance of Accoya with advanced through-colour technology, delivering a rich architectural grey finish engineered throughout the timber. Designed for sauna seating, decking and premium architectural applications, it offers exceptional stability, barefoot comfort and long-term durability, backed by an industry-leading 50-year transferable warranty.

Width & Thickness

Length

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Our Accoya is carefully prepared for your order to ensure material quality and integrity. Please allow 1–3 weeks for dispatch or collection.

Order a Sample ($20 for 4 timbers)

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Easy 30-day returns

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Overview
Important Information
Key Features
Documents & Files

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Overview

SDS Australia

Industry-Leading 50-Year Transferable Warranty

Accoya is backed by an unmatched 50-year above-ground warranty and a 25-year warranty in ground and fresh water applications. Unlike many building materials, this warranty is transferable to future property owners, helping protect the long-term value of your investment.

Natural Timber. Engineered Performance. Iconic Grey Design.

Manufactured using Accoya’s proprietary acetylation process, the timber is modified at a cellular level to dramatically reduce moisture absorption, helping resist swelling, shrinking, cracking and decay. The result is one of the world’s best-performing real timber products, designed to remain stable and durable in demanding environments.

Slate Grey Accoya Bench Board & Decking combines the performance of Accoya with advanced colour technology, delivering a refined, consistent aesthetic without the need for ongoing coating.

Unlike painted or surface-treated timber, the colour is infused through the wood, creating a finish designed to age naturally without peeling, flaking or degrading.

Designed for sauna seating, decking, wellness spaces and architectural applications, Slate Grey Accoya delivers premium aesthetics with minimal maintenance requirements.

Accoya Bench Board – Slate Grey
Width & Thickness	145mm x 21mm, 65mm x 21mm
Length	2400mm, 3000mm
Material	Acetylated Radiata Pine (Accoya)
Finish	Slate Grey (through-colour)
Surface	Smooth planed surface with rounded edges (3 mm)
Profile	UN-GROOVED DECKING PROFILES
Durability Class	Class 1

Important Information

Natural Variation

As a real timber product:

Colour variation between boards may occur
Grain remains visible
Tonal shifts may develop over time

This contributes to the authentic appearance of the material.

Key Features

Architectural Colour Built Into the Timber

Slate Grey Accoya features advanced through-colour technology, where a non-toxic pigment is infused throughout the timber rather than applied to the surface. This means:

Cuts and exposed edges retain the same consistent grey appearance
Colour cannot peel, flake or wear away like conventional coatings
Minimal maintenance is required to preserve the architectural aesthetic
Natural grain patterns remain visible, preserving the character of real timber

Stable in Heat & Moisture

Unlike conventional timber, Accoya is highly resistant to movement, helping maintain:

Flat seating surfaces
Consistent joins
Long-term structural integrity

Stable in Demanding Environments

Engineered to resist moisture movement, Accoya performs reliably in:

Heat
Humidity
High-use environments

Barefoot-Friendly Comfort

Smooth, refined and splinter-resistant, Accoya stays cooler than many composites and hardwoods, making it comfortable for sauna seating and barefoot areas.

Durable & Long-Lasting

With Class 1 durability, Accoya is resistant to rot, fungi and termites, backed by a 50-year above-ground warranty and 25-year in-ground and freshwater warranty.

Low Maintenance Timber

Accoya’s superior dimensional stability significantly reduces cracking, splitting and surface degradation over time, helping the timber maintain its appearance and performance for longer.

Premium Architectural Aesthetic

The Slate Grey finish offers a more refined and contemporary look, while still showcasing natural timber grain.

Ideal Applications

Sauna bench seating
Poolside Areas
Wellness and recovery spaces
Stairs & Circulation Areas
Deck & Outdoor Living Spaces
Rooftop Retreats
Architectural seating applications

Documents & Files

Care & Maintenance Instructions

🔥 Super Special

Same-Day Pick-Up in Sydney or Nowra, or Fast Shipping Australia-Wide!

The following popular Alder profiles are in stock now for same-day pick-up from our Milsons Point showroom in Sydney or Nowra warehouse (while stock lasts):

🪵 Did you know?

Alder is one of the most popular sauna timbers in Europe – especially in Finland and the Baltics – thanks to its smooth finish, low resin content, and stable performance in heat. If you’re after a true European sauna experience, Alder is the way to go. See our full Alder range here.

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