Bring durability, style, and long-lasting performance to your outdoor projects with our Pressure-Treated Scandinavian Redwood Shiplap Tongue & Groove Cladding. Precision-machined in-house and produced from joinery-grade slow-grown redwood, this profile offers the perfect combination of strength, weather resistance, and a clean, premium finish.
Designed with a Tongue & Groove shiplap profile, each board interlocks seamlessly, creating a secure, tight-fitting exterior that enhances structural protection while delivering a neat, professional appearance. Ideal for sheds, summerhouses, garages, workshops, garden buildings, playhouses, and more.
Every board is green pressure treated for long-term resistance against rot, fungal decay, and moisture, and is backed by a 15-Year Treat Right Warrantygiving you confidence in its durability for years to come. With its smooth planed surface and consistent high-quality machining, this cladding is a favourite for trade and DIY projects alike.
Why Choose This Redwood Shiplap T&G?
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Joinery-Grade Scandinavian Redwood slow grown for strength and stability
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Pressure Treated for Longevity ideal for exposed outdoor environments
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Precision Tongue & Groove Profile boards interlock for a clean, secure finish
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Machined In-House consistent quality and smooth planed finish
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15-Year Warranty reliable, long-lasting performance
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Free Samples Available see the quality before you buy
This profile is perfect for anyone wanting a smart, durable cladding solution with an excellent lifespan and classic shiplap appearance.
Matching Redwood Profiles Available
Specifications
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Weight: 1.35kg
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Width: 121mm (Finished Size)
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Thickness: 14.5mm
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Face Coverage: 115mm
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Lengths:
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15cm Sample
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1.2m (4ft)
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1.8m (6ft)
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2.4m (8ft)
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3.0m (10ft)
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3.6m (12ft)
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Timber: Scandinavian Redwood
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Finish: Planed Smooth
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Treatment: Green Pressure Treated
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Warranty: 15-Year Treat Right Warranty
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Maintenance & Installation: Advice available online
Frequently Asked Questions
1. What is Shiplap T&G cladding?
Shiplap T&G combines two profilesshiplap overlap and tongue & groove interlockingto create a tight, weather-resistant joint. The overlap provides extra water protection, while the T&G fit gives a smooth, seamless appearance.
2. Is this cladding suitable for exterior use?
Yes. The boards are fully pressure treated, making them ideal for sheds, summerhouses, garages, workshops, garden rooms, and other outdoor structures.
3. How long does pressure-treated redwood cladding last?
When installed correctly, it can last 15 years or more, supported by the included 15-Year Treat Right Warranty.
4. Does the cladding require additional treatment?
Pressure-treated boards do not require extra treatment for protection, but applying a UV oil or stain will help maintain the natural colour and reduce silvering.
5. What fixings should I use for installation?
Use stainless-steel nails or screws to prevent corrosion, staining, and chemical reactions with the treatment.
6. Can this Shiplap T&G be used indoors?
It can be used indoors, but it is primarily designed for exterior cladding due to the pressure treatment and weatherproof profile.
7. How do I install Shiplap Tongue & Groove cladding?
Boards should be fitted horizontally with the tongue facing upward. Secure each board into treated battens and maintain correct expansion gaps. A full installation guide is available for step-by-step help.
8. Can I cut the boards to custom lengths?
Yes. Boards can be cut on-site, and bespoke lengths can be supplied on request (additional charges may apply).
9. Will the timber change colour over time?
Yes. Pressure-treated redwood naturally weathers to a soft, silvery tone. UV protection can slow this process if a fresher colour is desired.
10. What is this profile typically used for?
This profile is widely used for:
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