Modified Timber
Stable, Durable, Sustainable, Versatile.
Stable, Durable, Sustainable, Versatile.
What’s Modified Timber?
What’s Modified Timber?
What’s Modified Timber?
Accoya is a high-performance modified timber known for exceptional stability, durability, and sustainability.
Made from FSC®-certified wood and enhanced through acetylation process, it stays straight, resists decay, and performs reliably in any climate.
Accoya Acetylation
Accoya Acetylation
A sustainably consistent supply of durable, non-toxic, and dimensionally stable wood makes it an ideal material for manufacturing high performance exterior timber products such as wood siding, outside decking, cladding, landscape timbers and joinery.
Accoya Timber Key Features
Accoya Timber Key Features
NATURALLY INSULATING
Offers improved insulation in comparison with commonly used hardwood and softwood species
Ideal for applications where energy conservation is important
NATURALLY INSULATING
Offers improved insulation in comparison with commonly used hardwood and softwood species
Ideal for applications where energy conservation is important
NATURALLY INSULATING
Offers improved insulation in comparison with commonly used hardwood and softwood species
Ideal for applications where energy conservation is important
RETAINED STRENGTH & HARDNESS
The process does not compromise the wood’s strength
Hardness is increased
High strength to weight ratio makes it suitable for challenging applications
RETAINED STRENGTH & HARDNESS
The process does not compromise the wood’s strength
Hardness is increased
High strength to weight ratio makes it suitable for challenging applications
RETAINED STRENGTH & HARDNESS
The process does not compromise the wood’s strength
Hardness is increased
High strength to weight ratio makes it suitable for challenging applications
BAREFOOT FRIENDLY
Ideal for all decking situations in extreme temperatures
Low thermal gain
Splinters are much less than other wood species when used for decking
BAREFOOT FRIENDLY
Ideal for all decking situations in extreme temperatures
Low thermal gain
Splinters are much less than other wood species when used for decking
BAREFOOT FRIENDLY
Ideal for all decking situations in extreme temperatures
Low thermal gain
Splinters are much less than other wood species when used for decking
EXCELLENT MACHINABILITY
Easy to machine and process
No special tools are required
EXCELLENT MACHINABILITY
Easy to machine and process
No special tools are required
EXCELLENT MACHINABILITY
Easy to machine and process
No special tools are required
INSECT BARRIER
Indigestible to a wide range of insects, including termites
Greatly reduced vulnerability
INSECT BARRIER
Indigestible to a wide range of insects, including termites
Greatly reduced vulnerability
INSECT BARRIER
Indigestible to a wide range of insects, including termites
Greatly reduced vulnerability
SUSTAINABLE SOURCE
From FSC® and other regionally certified woods
Naturally renewable
SUSTAINABLE SOURCE
From FSC® and other regionally certified woods
Naturally renewable
SUSTAINABLE SOURCE
From FSC® and other regionally certified woods
Naturally renewable
Resources
Resources
Accoya® Technical data
Accoya® Warranty Brochure
Accoya® Accreditations
For additional technical files, including CAD or BIM formats, please get in touch with our team at sales@calvarycarpentry.com
For additional technical files, including CAD or BIM formats, please get in touch with our team at sales@calvarycarpentry.com
Installation
Installation
Decking Installation Video
Babilou Accoya Dome Installation Video
Archifest 2023 Accoya Structure Video
Explore our case studies to see more interesting accoya project.
Explore our case studies to see more interesting accoya project.
Our Works
Our Works
Treasure Island
2025
-
Singapore
At Shou Sugi House, Calvary delivered the full timber application—from Shou Sugi Ban cladding to Accoya decking and soffits, alongside Champaca’s arcing ceiling, stairs, and flooring. Set within a lush backdrop, the materials come together in a calm, cohesive dwelling that sits quietly within its tropical waterfront setting.
Treasure Island
2025
-
Singapore
At Shou Sugi House, Calvary delivered the full timber application—from Shou Sugi Ban cladding to Accoya decking and soffits, alongside Champaca’s arcing ceiling, stairs, and flooring. Set within a lush backdrop, the materials come together in a calm, cohesive dwelling that sits quietly within its tropical waterfront setting.
Clavon
2025
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Clavon
At Clavon Residence, the swimming pool deck is finished with Accoya timber, forming a broad platform connecting seamlessly with the surrounding landscape.
Clavon
2025
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Clavon
At Clavon Residence, the swimming pool deck is finished with Accoya timber, forming a broad platform connecting seamlessly with the surrounding landscape.
Mandai Rainforest Resort
2025
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Mandai Wildlife Reserve
Mandai Rainforest Resort – Singapore’s First SLE Resort
Calvary Carpentry crafted the iconic seedpods at Mandai Rainforest Resort using Accoya, a high-performance, sustainable timber. Prioritising non-toxic, green-certified materials, great durability while minimising environmental impact. This project showcases our commitment to eco-friendly innovation and regenerative design. Sustainability with Conservation.
Mandai Rainforest Resort
2025
-
Mandai Wildlife Reserve
Mandai Rainforest Resort – Singapore’s First SLE Resort
Calvary Carpentry crafted the iconic seedpods at Mandai Rainforest Resort using Accoya, a high-performance, sustainable timber. Prioritising non-toxic, green-certified materials, great durability while minimising environmental impact. This project showcases our commitment to eco-friendly innovation and regenerative design. Sustainability with Conservation.
Have more questions?
We’re here to help.
Just send us your enquiry and we will contact you.
MALAYSIA
Level 2, 8, Jalan TS 6/9, Taman Perindustrian Subang, 47510 Subang Jaya, Selangor, Malaysia
© 2026 Calvary Carpentry Pte. Ltd. All Rights Reserved.
Privacy
Have more questions?
We’re here to help.
Just send us your enquiry and we will contact you.
MALAYSIA
Level 2, 8, Jalan TS 6/9, Taman Perindustrian Subang, 47510 Subang Jaya, Selangor, Malaysia
© 2026 Calvary Carpentry Pte. Ltd. All Rights Reserved.
Privacy
Have more questions?
We’re here to help.
Just send us your enquiry and we will contact you.
MALAYSIA
Level 2, 8, Jalan TS 6/9, Taman Perindustrian Subang, 47510 Subang Jaya, Selangor, Malaysia
© 2026 Calvary Carpentry Pte. Ltd. All Rights Reserved.
Privacy
