Description
Upgrade your exterior projects with our pressure-treated Scandinavian Redwood Shiplap Cladding, crafted from slow-grown, joinery-grade timber for superior stability and long-lasting performance.
Designed for sheds, garden rooms, workshops, cabins, and a wide range of exterior applications, this shiplap offers the perfect combination of style, durability, and weather resistance.
Each board is planed smooth, machined to a precise finish, and treated with Tanalith® Green Preservative, providing enhanced protection against rot, fungal decay, and insect attack. As part of the CladMark quality assurance scheme, every board meets strict industry standards, giving you confidence in both performance and consistency.
Key Features
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Joinery-Grade Scandinavian Redwood – strong, stable, and slow-grown for increased density.
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Pressure Treated with Tanalith® Green – long-lasting protection against rot and decay.
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15-Year Treat-Right Warranty – peace of mind for exterior projects.
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CladMark Certified – assurance of quality and consistent machining.
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Stylish Shiplap Profile – provides a neat, traditional appearance with excellent weatherproofing.
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Smooth Planed Finish – ideal for modern garden buildings and timber structures.
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Free Samples Available – limited to two per customer.
Specifications
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Width (Finished): 145mm
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Thickness (Finished): 14mm
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Face Coverage: 134mm
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Overlap: 11mm
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Lengths:
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15cm Sample
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0.9m, 1.2m, 1.5m, 1.8m
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2.4m, 3.0m, 3.6m, 4.2m, 4.8m
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Weight: Approx. 0.9kg per board
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Timber Type: Slow-Grown Joinery Grade Redwood
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Surface Finish: Planed Smooth
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Treatment: Tanalith® Green Pressure Treated
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Warranty: 15-Year Treat-Right Warranty
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Recommended Fixings: Stainless Steel
Ideal Applications
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Garden sheds and workshops
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Summerhouses and garden rooms
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Exterior walls and cladding panels
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Timber cabins and outdoor structures
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Feature walls in sheltered outdoor spaces
Why Choose Treated Redwood Shiplap?
Redwood is known for its excellent stability, attractive grain, and durability. Combined with professional pressure treatment, this shiplap ensures great long-term performance even in the UK climate. The overlapping profile forms a tight, secure joint that efficiently sheds rainwater, helping to protect the structure underneath.
With its smooth finish and reliable treatment, this cladding offers both a premium appearance and practical weather protection, making it an excellent choice for all outdoor buildings.
Delivery & Samples
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Free sample boards available (limit 2)
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Delivery typically 3–7 working days
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Delivery charges shown at checkout
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Bespoke cutting available on request
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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