Description
Bring timeless sophistication and long-term performance to your project with Accoya 145mm x 18mm Shadow Gap Cladding.
Crafted from premium, acetylated Accoya timber, this cladding delivers the ultimate combination of beauty, stability, and sustainability. Designed for architects, builders, and homeowners who demand excellence, it offers a crisp, contemporary aesthetic with the reliability of Class 1 durability.
Why Choose Accoya Shadow Gap Cladding?
Engineered through an advanced acetylation process, Accoya timber undergoes a molecular transformation that enhances its resistance to rot, decay, and insects—without the need for toxic chemical preservatives. The result is a dimensionally stable, eco-friendly material that performs exceptionally in any environment, from coastal façades to modern interiors.
The Shadow Gap profile creates bold, linear lines and subtle depth, making it ideal for sleek, architectural exteriors or refined interior feature walls. With its light blonde tone that naturally weathers to a beautiful silver-grey, this cladding complements both minimalist and natural design schemes.
Product Specifications
| Specification | Details |
|---|---|
| Material | Accoya (acetylated softwood) |
| Width | 145mm |
| Thickness | 18mm |
| Face Coverage | 135mm |
| Durability Class | Class 1 – Exceptional resistance to rot and decay |
| Movement Class | Very Small – minimal swelling or shrinking |
| Treatment | Acetylated for superior stability and longevity |
| Finish | Planed smooth |
| Lengths Available | 0.9m, 1.2m, 1.8m, 2.4m, 3.0m, 3.6m, 3.9m, 4.2m |
| Origin | Sustainably sourced from New Zealand |
| Fixings | Stainless Steel recommended |
| Colour | Pale cream to light blonde, silver-grey when weathered |
| Recommended Wastage | 15–20% (due to natural brittleness) |
| Minimum Order | 100 Linear Metres (orders under this amount cannot be processed) |
Performance Highlights
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🌿 Class 1 Durability: Unrivalled protection against rot and decay.
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⚙️ Exceptional Stability: Minimal movement, warping, or swelling—even in extreme humidity.
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🌊 Low Maintenance: No need for chemical treatments; easy to finish, stain, or paint.
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🏗️ Architectural Appeal: Clean, shadowed lines for a modern and refined appearance.
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♻️ Sustainably Sourced: Certified, renewable softwood modified for enhanced performance.
Board Orientation – Get It Cut Right
The orientation of your cladding matters.
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Vertical Run: Naturally channels rainwater, best for moisture management.
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Horizontal Run: Requires angled cuts in the shadow gaps to allow water runoff.
Let us know your intended orientation when ordering so we can machine your boards correctly for optimal performance.
Perfect For
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Exterior façades and feature walls
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Garden buildings, extensions, and summer houses
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Contemporary interior wall cladding
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Coastal and high-humidity environments
A Material That Lasts for Generations
Accoya Shadow Gap Cladding is the benchmark in sustainable performance. Outperforming even the most durable hardwoods, it’s a future-proof investment that combines natural beauty with cutting-edge wood science.
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Some of Our Service Reviews
This company deserves more than 5 stars
This company deserves more than 5 stars! Brilliant help & communication by the staff there. My purchase was delivered the next day. can't fault them at all. Thank you
Date of experience: 21 February 2024
Made up with the cladding and…
Made up with the cladding and corrugated roof sheets
Delivered early which was a bonus
All the sheets were not damaged
And l must say cheapest around
Spot on
Will defo use again
Date of experience: 17 October 2023
Cladding
Very pleased with my grey composite cladding. Staff helpful, free samples received, confirming a good product at a fair price, leading to my purchase.
Date of experience: 11 June 2023
Help with my new garage roof!
Trade Warehouse could not have been more helpful. They very patiently guided a roofing newbie through all of the stuff I would need to do the job and provided helpful tips along the way. It's rare to find a company offering such a fantastic level of customer service as standard. I would highly recommend them and will certainly use them again.
Date of experience: 23 August 2023
Garden Storage
My contractor (Charlie Keep) recommended you to me so I could order the materials online for delivery direct to my home. These were for a project to construct a Garden Storage Area. The materials were perfect and the whole process was simple and slick with materials delivered on time and very well packaged. Charlie has since completed the project & I am very happy with the outcome.
Date of experience: 20 August 2023
Right product, right price, right delivery.
Right product, right price, right delivery. Sure, it was only one length of cast iron guttering but they took the order seriously, packed it well and kept me updated on delivery. And when I opened the very good packaging I found it was exactly what I had wanted. How can you do better!!
Date of experience: 31 January 2023
Fast
Fast , efficient service
Date of experience: 12 September 2023
It was exactly what I wanted
It was exactly what I wanted. Arrived in good order
Perfect
Date of experience: 16 September 2023
Straight forward and helpful with…
Straight forward and helpful with making the order. Delivery guy was friendly and was helpful in bringing the sheets into the back yard (was only a few). Really happy and would highly recommend!!!
Date of experience: 27 August 2023
Read more reviews here.
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