Description
Upgrade your exterior with Accoya 145mm x 19mm Square Edge (PSE) Cladding Boards — the ultimate combination of natural beauty, cutting-edge technology, and unrivalled durability.
Each board is crafted from Accoya®, a sustainably sourced softwood from New Zealand that undergoes an advanced acetylation process. This chemical-free modification permanently enhances the wood’s structure, making it dimensionally stable, rot-resistant, and insect-proof — even in the harshest conditions.
With a smooth planed finish (PSE) and a pale cream to light blonde colour that weathers gracefully to a silver-grey, this cladding delivers a refined, contemporary look suited to any architectural style. Its low-movement characteristics mean minimal warping or swelling, ensuring crisp, clean lines for decades to come.
Ideal for both residential and commercial projects, Accoya cladding outperforms even tropical hardwoods in longevity — offering Class 1 durability and a potential lifespan of up to 60 years above ground.
Whether you’re designing a sleek façade, garden building, or modern extension, these 145mm x 19mm Accoya boards provide a premium, sustainable solution with minimal maintenance requirements.
Key Features
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✅ Premium Accoya timber – acetylated for maximum stability and durability.
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🌿 Sustainably sourced from managed forests in New Zealand.
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💧 Exceptional weather resistance – won’t warp, swell, or shrink.
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🪵 Planed square edge finish (PSE) for a smooth, modern appearance.
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🧱 Class 1 durability – resistant to rot, decay, and insects.
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🛠️ Easy to work with using standard woodworking tools.
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🔩 Stainless steel fixings recommended for long-term performance.
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🎨 Can be painted, oiled, or stained for custom finishes.
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⚠️ Minimum order: 100 linear metres (orders below this will be cancelled due to machining requirements).
Available lengths: 0.9m, 1.2m, 1.8m, 2.4m, 3.0m, 3.6m, 3.9m, 4.2m
Full Technical Specifications
| Property | Detail |
|---|---|
| Material | Accoya Modified Softwood |
| Width | 145mm |
| Thickness | 19mm |
| Face Coverage | 145mm |
| Durability Class | Class 1 |
| Movement Class | Very Small |
| Treatment | Acetylated (non-toxic, chemical-free) |
| Finish | Planed Smooth (PSE) |
| Origin | New Zealand |
| Colour | Pale cream to light blonde, weathers to silver-grey |
| Recommended Fixings | Stainless Steel |
| Recommended Wastage | 15–20% due to brittleness |
| Minimum Order | 100 Linear Metres |
Why Choose Accoya Cladding?
Accoya cladding is the smart choice for architects, builders, and homeowners seeking longevity, sustainability, and aesthetic quality. It combines the warmth of real timber with performance that rivals modern composites — all from a renewable resource.
Less movement, less maintenance, more life — Accoya stands in a class of its own.
Product FAQs
What is Accoya PSE cladding used for?
Accoya PSE (Planed Square Edge) boards are perfect for modern exterior cladding projects — from garden rooms and extensions to commercial façades. Their smooth, straight profile makes them ideal for clean-lined contemporary designs.
Can I order custom lengths?
Yes! If you require bespoke lengths or specific quantities beyond the listed sizes, contact our sales team. We’ll do our best to accommodate your project needs.
What makes Accoya different from other timbers?
Unlike pressure-treated or tropical hardwoods, Accoya is modified right through to the core using acetylation — meaning the entire board is protected, not just the surface. This gives unmatched stability and resistance to decay without the use of toxins.
Usage FAQs
What fixings should I use with Accoya cladding?
We recommend stainless steel nails or screws, as other metals may react with the timber or discolour over time.
Can I use Accoya cladding indoors?
You can, but it’s designed primarily for external use where durability and weather resistance are essential. For interiors, you might consider alternative timbers for cost efficiency.
How should I install it?
We’ve prepared a detailed installation guide for each cladding profile — covering fixings, spacing, and ventilation best practices. You can find it in our Cladding Install Guides section.
Maintenance & Lifespan
How long will Accoya cladding last?
When properly installed and maintained, Accoya cladding can last 50–60 years above ground — significantly longer than untreated softwoods.
Does Accoya require a coating or paint?
No, it doesn’t require it for protection, but coatings can enhance colour and design. Accoya holds paint exceptionally well, so finishes last longer before needing maintenance.
What happens if left uncoated?
If left unfinished, Accoya naturally weathers to a beautiful silver-grey patina without losing performance.
Delivery FAQs
How much is delivery?
Delivery costs depend on your location and order size. You’ll see an accurate delivery charge at checkout before confirming your order.
What’s the lead time?
Lead times vary depending on machining and stock levels — please refer to the product page below the pricing, where current lead times are displayed.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Request Samples
To request samples, please visit this page and fill out your details.
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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