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Huge Range of Stock
Sustainably Sourced & Eco-Friendly
Expert Product Team On Hand
Trade Prices
Live Chat Available
Limited Time Offer

Huge Range of Stock
Sustainably Sourced & Eco-Friendly
Expert Product Team On Hand
Trade Prices
Live Chat Available
Limited Time Offer
Huge Range of Stock
Sustainably Sourced & Eco-Friendly
Expert Product Team On Hand
Trade Prices
Live Chat Available
Limited Time Offer

Huge Range of Stock
Sustainably Sourced & Eco-Friendly
Expert Product Team On Hand
Trade Prices
Live Chat Available
Limited Time Offer

Huge Range of Stock
Sustainably Sourced & Eco-Friendly
Expert Product Team On Hand
Trade Prices
Live Chat Available
Limited Time Offer

2.4m Iroko Wood Cladding 145mm x 18mm – Exterior Shadow Gap Timber Boards

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2.4m Iroko Wood Cladding 145mm x 18mm – Exterior Shadow Gap Timber Boards

Name: 2.4m Iroko Wood Cladding 145mm x 18mm – Exterior Shadow Gap Timber Boards
Brand: Ruby Group
SKU: 56225640939895
Price: 51.97 GBP
Availability: InStock

Board Length: 2.4m

Board Orientation: Horizontal

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Trade Price:

£51.97

Stock:

In stock

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Delivered within 3-4 weeks.

These 2.4m 145mm x 18mm Iroko Shadow Gap cladding boards are a premium hardwood option for striking, contemporary exterior projects. Iroko is a naturally oil-rich African hardwood, prized for its strength, stability and natural resistance to rot and insects – making it ideal for outdoor use without the need for pressure treatment.

The 145mm x 18mm profile creates clean, sharp shadow lines that give buildings a modern architectural look. With a 135mm face coverage, these boards provide strong visual definition while offering reliable weather protection when installed correctly.

Freshly machined Iroko features rich golden to medium brown tones, which naturally weather to a refined silver-grey over time. If you’d like to maintain the original colour for longer, we recommend applying a high-quality oil or OSMO stain, which also helps protect against moisture, UV exposure, cracking and movement.

Perfect for luxury façades, garden rooms, garden offices, outbuildings and modern extensions, Iroko Shadow Gap is a high-end cladding solution that combines premium looks with long-term performance.

Product Specifications

Material: Iroko
Minimum Order: 100 linear metres
(Orders under this will be cancelled due to machining requirements. Any quantity available in British Cedar, British Larch or Treated Redwood)
Width: 145mm
Thickness: 18mm
Face Coverage: 135mm
Board Length: 2.4m
Finish: Planed Timber
Type: Hardwood
Origin: Africa
Durability Class: Class 2
Movement Class: Low
Knots: Few
Colour: Golden to medium brown, weathering to soft silver-grey
Modified Timber: No
Fixings: Stainless Steel recommended
Treatment: Untreated (OSMO oil or stain recommended)
Available Lengths: 0.9m, 1.2m, 1.8m, 2.4m, 3.0m, 3.6m, 3.9m and 4.2m
Recommended Wastage: 5–10%

Key Features & Benefits

Premium African hardwood
Modern shadow gap profile for clean architectural lines
Naturally resistant to rot and insects
Dense, strong timber with excellent stability
Low movement for long-term performance
Smooth planed finish

Alternative Cladding Options

British Larch Cladding – UK-grown softwood option
Iroko Loglap – Profiled hardwood alternative
Iroko 6” x 1” Boards – Square edge option
Thermowood Cladding – Heat-treated softwood alternative
European Larch T&G – Softwood profiled option

Frequently Asked Questions (FAQs)

1. What are shadow gap boards typically used for?
Shadow gap boards are mainly used for modern exterior cladding on garden rooms, façades, sheds and architectural feature walls.

2. Is Iroko suitable for external use?
Yes, Iroko is naturally resistant to rot, moisture and insect attack, making it ideal for outdoor environments.

3. Do I need to treat Iroko shadow gap cladding?
Treatment isn’t required, but using a wood oil or OSMO stain helps preserve colour and enhances surface protection.

4. How long does Iroko cladding last?
With correct installation and maintenance, Iroko cladding can last 50–60+ years.

5. What fixings should I use?
Always use stainless steel nails or screws to avoid corrosion and staining.

6. Can this cladding be used internally?
It can be used internally, but it’s designed primarily for external applications.

7. Do you offer bespoke lengths?
Yes. Contact us.

8. Does Iroko move or warp over time?
Iroko has low movement, making it very stable compared to most softwoods.

9. How much wastage should I allow?
We recommend allowing 5–10% extra material for cuts and trimming.

10. How do I install Iroko shadow gap cladding?
We provide detailed Cladding Install Guides with step-by-step fitting instructions.

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

To request samples, please visit this page and fill out your details.

Christine Lonsdale,

50 reviews

,

GB

21 Feb 2024

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

Stephen Fox, 10 reviews,

GB

12/9/23

Verified

Fast

Fast , efficient service

Date of experience: 12 September 2023

Katharine Meller,

6 reviews

,

GB

19 Sep 2023

Verified

It was exactly what I wanted

It was exactly what I wanted. Arrived in good order
Perfect

Date of experience: 16 September 2023

David,

1 review

,

GB

28 Aug 2023

Verified

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

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I have never been so impressed with a company ever before, in my 67 years on this planet! Not only is the garden furniture we received, nearly perfect in every way (only 1 screw missing), your prices & delivery service are great too. What makes your company so very special though, is your customer service back up. What an amazing team you have working for you! Responsive emails & phone calls, friendly & pleasant to talk to & their ability to resolve any problems very quickly, are first class.Well done everyone at Trade Warehouse! I have never been so impressed with a company ever before, in my 67 years on this planet! Not only... I have never been so impressed with a company ever before, in my 67 years on this planet! Not only is the garden furniture we received, nearly perfect in every way (only 1 screw missing), your prices & delivery service are great too. What makes your company so very special though, is your customer service back up. What an amazing team you have working for you! Responsive emails & phone calls, friendly & pleasant to talk to & their ability to resolve any problems very quickly, are first class.Well done everyone at Trade Warehouse!

Christine Lonsdale

Exceptionally Great Company

I recently ordered tiles from this company and my experience was excellent. Product was high quality, delivery very quick. My additional questions were answered promptly. They were recommended to me by A friend and I will be recommending them further. I recently ordered tiles from this company and my experience was excellent. Product was high quality, delivery very quick. My... I recently ordered tiles from this company and my experience was excellent. Product was high quality, delivery very quick. My additional questions were answered promptly. They were recommended to me by A friend and I will be recommending them further.

Davorka Andjelic

Trade warehouse has been brilliant since the start of my project

Trade warehouse has been brilliant from the moment I requested a sample of the product that I was interested in. The sample I was sent to view was amazing, I was able to get a complete insight into the quality and how to use it. The support throughout my purchase was first class I can not fault it. Thank you trade warehouse you have renewed my confidence in the old fashioned customer care service. I will always recommend this company to others. Trade warehouse has been brilliant from the moment I requested a sample of the product that I was interested in.... Trade warehouse has been brilliant from the moment I requested a sample of the product that I was interested in. The sample I was sent to view was amazing, I was able to get a complete insight into the quality and how to use it. The support throughout my purchase was first class I can not fault it. Thank you trade warehouse you have renewed my confidence in the old fashioned customer care service. I will always recommend this company to others.

Wright

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I ordered a metal pergola with retracting sun screen. From looking up this item I found that this company had the right specifications of what I required. Delivery was very quick & within time frame specified. Communication throughout was excellent. It took a couple of weeks before we got around to erecting it. All the parts were labelled very well. The instructions given were very descriptive & simple to follow. All in all I am very pleased with this pergola it was a good price too. I would definitely use this company again & I would recommend them to others 😃 I ordered a metal pergola with retracting sun screen. From looking up this item I found that this company had... I ordered a metal pergola with retracting sun screen. From looking up this item I found that this company had the right specifications of what I required. Delivery was very quick & within time frame specified. Communication throughout was excellent. It took a couple of weeks before we got around to erecting it. All the parts were labelled very well. The instructions given were very descriptive & simple to follow. All in all I am very pleased with this pergola it was a good price too. I would definitely use this company again & I would recommend them to others 😃

Debbie Powell

Very Reasonably Priced

Very reasonably priced, compared to other sellers, quick and efficient ordering and delivery, others were saying more than 2 weeks keeping me informed every step of the way. Very easy to assemble and looks amazing! Very reasonably priced, compared to other sellers, quick and efficient ordering and delivery, others were saying more than 2 weeks... Very reasonably priced, compared to other sellers, quick and efficient ordering and delivery, others were saying more than 2 weeks keeping me informed every step of the way. Very easy to assemble and looks amazing!

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Great Product

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Leo Z

Excellent

Excellent, easy-to-use and friendly service. Quick turnaround on delivery, competitive prices and would use again. Our company ordered a range of Lindab products for one of our sites and were pleased with the speed of delivery, and quality of the products received on site. Excellent, easy-to-use and friendly service. Quick turnaround on delivery, competitive prices and would use again. Our company ordered a range... Excellent, easy-to-use and friendly service. Quick turnaround on delivery, competitive prices and would use again. Our company ordered a range of Lindab products for one of our sites and were pleased with the speed of delivery, and quality of the products received on site.

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Great Service

The guy we ordered with was outstanding the phone manor was 100% top service all round. Very helpful and knowledgeable with the materials we were buying so overall I would give you guys 10.5 out of 10. We will 100% use you guys again once we are ready for the rest of the building. Thank you The guy we ordered with was outstanding the phone manor was 100% top service all round. Very helpful and knowledgeable... The guy we ordered with was outstanding the phone manor was 100% top service all round. Very helpful and knowledgeable with the materials we were buying so overall I would give you guys 10.5 out of 10. We will 100% use you guys again once we are ready for the rest of the building. Thank you

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