Accoya® Color Grey is a sustainably modified wood that’s infused with a natural grey pigment throughout its core, offering long-lasting color, durability, and dimensional stability for interior and exterior use. At Hewn, we build upon the extraordinary properties of Accoya® Color Grey by applying our proprietary color and finish techniques to create beautiful, unique, and long-lasting wood products, suitable for a variety of applications, and customizable for the specific needs of your project.
Accoya Grey (Sealed)
Brushed
Accoya Grey (Sealed)
Resawn
Accoya Grey (Sealed)
Smooth
Accoya Grey (Sealed)
Vertical Brushed
Accoya Grey (Unsealed)
Brushed
Accoya Grey (Unsealed)
Resawn
Accoya Grey (Unsealed)
Smooth
Accoya Grey (Unsealed)
Vertical Brushed
Boulder
Brushed
Boulder
Resawn
Boulder
Smooth
Boulder
Vertical Brushed
Perfect Grey
Brushed
Perfect Grey
Resawn
Perfect Grey
Smooth
Perfect Grey
Vertical Brushed
Slate
Brushed
Slate
Resawn
Slate
Smooth
Slate
Vertical Brushed
As the first company to produce acetylated wood on a commercial scale, Accoya® is leading the charge in providing durable and dimensionally stable wood for a variety of applications. In the acetylation process, softwood is essentially turned into a hardwood through the introduction of a non-toxic vinegar-like solution, creating a new type of wood that is durable all the way through the board, not just on the surface. In practice, this allows for a wood product that is significantly protected against the elements, making it perfect for installation in exterior environments where a standard sealed wood product would fail after only a short amount of time.
Endless Versatility
The uniquely durable properties of Accoya® Color Grey, created using an all-natural process, allow the wood to be utilized for a variety of purposes. Our sales representatives can customize your order to fit your precise needs and use-case scenarios.
Exterior Siding
Sealed for optimal protection against the elements
Interior Paneling
Durable enough for high-traffic commercial areas
Decking
Insect and rot resistance in a real-wood product
Accoya Grey Project Gallery
Click below to view projects featuring Hewn’s Accoya Grey.
Specifications
Dimensions
Standard 1× Widths:
1×6, 1×8
Standard 1× Thickness:
11/16″
(3/4″ custom)
Additional 1× and 2× options available upon request
Durability
Greater than 9 rating per AWPA E7
Moisture Content
3-5 % at 65% relative humidity, 20°C
Density and Spread
65% RH, 20°C, Average 32 pcf, Range 27 to 37 pcf
Fire Rating
Class C (ASTM E84) and D (EN14915)
Thermal Conductivity
ASTM C177, = 0.102 – 0.120 W/m∙K
Janka Hardness
ASTM E143, Tangential = 972 psi, End Grain = 1,484 psi
Certification
Approved by WDMA as compliant with WDMA I.S. 4. Certified as compliant with Cradle-To-Cradle with Platinum Level Material Health Certificate.
Textures
- Brushed
- Smooth Light Brushed *
- Vertical Brushed †
- Resawn *
- Circle Sawn *
- Crackle ^
- Caviar ^
- Shipwreck ‴
* Custom Option
† Default on Peppercorn, Desert Sand, and Mushroom
^ Specific to Shou Sugi Ban Options
‴ Specific to the Shipwreck finish
Standard Milling Profiles
Hewn’s Accoya Siding is available in a variety of milling profiles, designed to fit the individual needs of your project. Our most common 1× milling profiles, listed on this page, assume our standard thickness of 11/16″. Additional dimensions are available upon request.
Some milling profiles may be unavailable on certain finishes, including (but not limited to) our Heavy Char options. Please contact our sales representatives for additional information and alternative options.
T&G Milling Profiles
1x6 T&G Milling Profiles
T&G 1x6 Tight
T&G 1x6 1/16" Fineline
T&G 1x6 1/8" Fineline
T&G 1x6 3/16" Fineline
T&G 1x6 1/4" Fineline
1x8 T&G Milling Profiles
T&G 1x8 Tight
T&G 1x8 1/16" Fineline
T&G 1x8 1/8" Fineline
T&G 1x8 3/16" Fineline
T&G 1x8 1/4" Fineline
Shiplap Profiles
1x6 Shiplap Milling Profiles
Shiplap 1x6 Tight
Shiplap 1x6 1/16" Fineline
Shiplap 1x6 1/8" Fineline
Shiplap 1x6 3/16" Fineline
Shiplap 1x6 1/4" Fineline
1x8 Shiplap Milling Profiles
Shiplap 1x8 Tight
Shiplap 1x8 1/16" Fineline
Shiplap 1x8 1/8" Fineline
Shiplap 1x8 3/16" Fineline
Shiplap 1x8 1/4" Fineline
Acetylated wood, at-scale.
Acetylation has been studied and practiced in the wood industry for more than 70 years. The process, by which wood is effectively “pickled” in an all-natural vinegar-like substance, was once considered impossible to produce in large quantities. With Accoya®, however, these barriers have been eliminated, and this durable real-wood non-toxic product can be produced and purchased at-scale.
And with Hewn’s expertise in coloring and finishing, Accoya® can be elevated to the next level, creating a timeless look and feel perfect for your next commercial or residential project.
Hewn has partnered with Nova USA Wood to pair their industry-leading Rainscreen Siding ecosystem with our Hewn product offerings. Nova’s QuickClip Rainscreen Siding System is engineered by nature to withstand the test of time and the elements. Professional builders favor their products for their high quality, high performance and consistency.
