Naturally durable and visually striking, our 145 x 18mm Western Red Cedar Shadow Gap Cladding is a premium choice for exterior projects. The sleek shadow gap profile delivers a clean, contemporary look while showcasing the rich colour and grain that Western Red Cedar is known for.
Lightweight, stable, and naturally resistant to rot and insects, this cladding performs exceptionally well in exposed environments. The shadow gap profile adds architectural depth, making it ideal for modern homes, outdoor buildings, and feature walls. Left untreated, the timber naturally weathers to a beautiful silver-grey patina, or you can preserve its warm tones with a high-quality protective oil.
Key Facts
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Modern Shadow Gap Profile
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Naturally Durable
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Low Density & Lightweight
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Stable with Minimal Movement
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Versatile for Contemporary Designs
Specification
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Material: Western Red Cedar
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Profile: Shadow Gap
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Width: 145mm
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Thickness: 18mm
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Face Coverage: 135mm
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Grade: No. 2 Clear & Better
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Treatment: Untreated (naturally rot resistant OSMO recommended for colour protection)
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Finish: Planed Timber
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Lengths Available: 0.9m, 1.2m, 1.8m, 2.4m, 3.0m, 3.6m, 3.9m, 4.2m
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Type: Softwood
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Origin: Canada / North America
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Durability: Class 2
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Movement Class: Small
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Knots: Few
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Colour: Rich red-brown tones that weather to silvery grey
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Modified Timber: No
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Fixings: Stainless Steel
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Recommended Wastage: 1015%
Key Points
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Naturally durable with excellent resistance to rot and insects
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Lightweight and thermally efficient
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Stable under changing weather conditions
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Smooth planed finish for a premium contemporary appearance
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Suitable for vertical and horizontal installation
Board Run (Important)
Its important to specify whether your cladding will be installed vertically or horizontally:
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Vertical installation: Water naturally drains downwards; boards are cut with a crisp square shadow line.
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Horizontal installation: Boards are cut with a slight angle in the shadow gap to prevent water trapping and reduce risk of rot.
Other Options
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British Cedar Cladding
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Western Red Cedar 6″ x 1″ Planed Board
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Western Red Cedar Loglap
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Western Red Cedar T&G 144 x 19mm
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All Shadow Gap Cladding Shop the range
FAQs
Product
What are Shadow Gap boards typically used for?
Shadow Gap Western Red Cedar is ideal for exterior cladding on modern homes, garden buildings, offices, and feature walls.
Do you offer bespoke lengths?
Yescustom lengths can be arranged. Contact the sales team.
How long does Western Red Cedar last?
With proper care, Western Red Cedar cladding can last up to 40 years.
Usage
What nails should be used for Shadow Gap cladding?
Stainless Steel fixings are required to prevent staining and ensure longevity.
Can Western Red Cedar cladding be used internally?
It can be, but it is primarily recommended for external projects.
How do I install Western Red Cedar Shadow Gap?
A full, step-by-step installation guide is available. See the Cladding Install Guides page.
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