Cladding

Shadow Line Cladding

Shadow Line Aluminium Cladding

Features

Overview

Shadow line cladding gives a facade a defined horizontal reveal along every board, so the elevation reads with quiet depth and rhythm rather than as a flat surface. Shadow Line is adjustable: the same board delivers either that reveal or a clean flat finish line, set by how it is fitted. Available in four widths, from a narrow feature strip to a full elevation.

Where It Fits

Built to Perform

Sizes & Options

Take a Closer Look

Vertical

Shadow Line boards install vertically using the same interlocking system as a horizontal run, each board clicking into the one beside it and fixed with concealed screws into the substructure. Installation follows a left-to-right sequence, using the same finishing trims, corners and starter as a horizontal wall.

Horizontal

Starters

Trims

Corners

Profiles

Suite

Shadow Line Board
100mm

KEC100S

Shadow Line Board
150mm

KEC150S

Shadow Line Board
200mm

KEC200S

Interlocking
Starter

KEDS

Cladding - Clip
45mm

KACC

Base Trim
(F)

KECFF

Cover Trim
(M)

KECFMM

Base Joiner Trim
(F)

KECJF

Cover Joiner Trim
(M)

KECJM

Reversible Corner Base Trim
(M)

KECCML

Base Corner Trim
135º (F)

KECCFA

Reversible Corner Cover Trim - Rounded
(F)

KECCF

Reversible Corner Cover Trim - Square
(F)

KECCF-02

Shadow Line Board - 100mm

KEC100S

Add Sample

PDF

DWG

Customisation

Spacing

Our boards can be spaced apart to open up the reveal and deepen the shadow line.

Sequencing

Combine different board sizes to craft a distinctive look.

Colouring

Mix and match different timber colours to create realistic and dynamic timber looks.

Curved

Our 100mm boards can flex around curved surfaces, opening up creative possibilities for unique and organic designs.

Downloads

Specification

Product Details

Material

Tempered Extruded Aluminium Alloy.
*See individual profile specification sheets for exact alloy and temper.

Country of Origin

Australia
Manufactured in Australia and supplied to the UK market.

Length

6500mm

Finish

Traditional solid powder coated colours or a sublimated timber grain surface

Availability

Lead times can vary between 2–4 weeks, depending on the time of year. Contact us for an accurate estimate.
Made to Order - 8-20 weeks.

Warranty Life

Backed by a standard 15 year warranty and up to 25 years on selected finishes.
See our warranty page for the terms.

Maintenance

Periodic washing with a soft broom and water, using a pH-neutral detergent

Sustainability

Recyclable Aluminium
Non-Chromate Pre-Treatment
VOC free Powder Coat

Performance Requirements

Testing Design Standards

CWCT Standards

Fire Standards

Certified A2 Fire Rated (EN 13501-1)

Performance Standards

BS EN 755 Aluminium Alloy Extrusions.

BS EN 12206 Powder Organic Coatings.

FAQs

What is shadow line cladding?

Shadow line cladding is an aluminium cladding profile where each board sits with a defined recessed reveal along its length, creating a continuous horizontal shadow line across the facade. The effect gives a building quiet depth and rhythm without a heavy textured look. Knotwood’s Shadow Line delivers this in a low-maintenance aluminium system with architectural-grade timber-look finishes, suited to UK residential and commercial facades.

How does shadow line cladding differ from other cladding profiles?

Shadow Line sits in the middle of Knotwood’s range for visual weight. It has more depth and definition than a flush board, and more restraint than V Line or Castellated. The horizontal reveal is subtle: contemporary, without the bold texture or open joint gap that more expressive profiles create. It is the choice when the brief calls for a clean, considered finish rather than a statement.

What is shadow line cladding suited to?

Shadow Line suits contemporary residential and commercial facades where clean horizontal lines are part of the design language. It works as the primary finish on a new build or as a considered match to an existing facade on a renovation. Because the reveal is subtle rather than bold, it sits comfortably alongside brick, render and glazing without imposing a heavy architectural statement.

Is shadow line cladding good for renovations?

Yes. The horizontal profile is contemporary without being so overtly modern that it clashes with an older building’s structure. The reveal gives a facade an updated look without breaking its connection to what it was. Because the system is aluminium, the new cladding will not behave differently to the existing structure as both respond to weather and temperature over time.

What is the reaction to fire classification of Knotwood Shadow Line?

Knotwood Shadow Line is classified A2-s1,d0 to BS EN 13501-1. Under Approved Document B, A2-s1,d0 is a material of limited combustibility, which is the classification required for external wall construction on relevant buildings under Regulation 7(2). The classification applies to the board as tested, finish included. Contact our team for the classification report reference for your specification.

Is Shadow Line suitable for a rainscreen build-up?

Shadow Line is available with a ventilated option, which suits a drained and ventilated rainscreen cladding build-up behind the boards. Cavity depth, breather membrane and fixing centres are project-specific and should be confirmed against Knotwood’s technical documentation and the substrate you are fixing to.

What sizes does Shadow Line come in?

Shadow Line comes in four board widths: 100mm, 150mm, 200mm and 300mm. The same profile covers a narrow feature strip or a full elevation, and the four widths can be mixed across a single facade to break up a large run.

How is Knotwood Shadow Line installed?

Shadow Line uses an interlocking fixing system with concealed screws into the substructure. Boards can run horizontally, interlocking upward from a base trim, or vertically in a left-to-right sequence using the same starter, trims and corners. No fixings are visible on the finished face. Full installation detail is in the Quick Start Guide and Detail Drawings Library, both available from the Resources section.

Why Knotwood?

Free Estimations
& Support

Huge Range of
Woodgrain Finishes

CPDs & Educational Support

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Connect with Knotwood professionals for system selection, technical support, and the resources needed to complete your project with confidence.

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technical info?

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Samples

Colour Samples

Profile Samples

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Cladding

Shadow Line Cladding

Shadow Line Aluminium Cladding

Features

Take a Closer Look

Profiles

Customisation

Spacing

Sequencing

Colouring

Curved

Downloads

Specification

Product Details

Performance Requirements

FAQs

What is shadow line cladding?

How does shadow line cladding differ from other cladding profiles?

What is shadow line cladding suited to?

Is shadow line cladding good for renovations?

What is the reaction to fire classification of Knotwood Shadow Line?

Is Shadow Line suitable for a rainscreen build-up?

What sizes does Shadow Line come in?

How is Knotwood Shadow Line installed?

Why Knotwood?

Free Estimations & Support

Huge Range of Woodgrain Finishes

CPDs & Educational Support

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Need More Help?

Want some samples?

Speak with a Knotwood Expert

Need more technical info?

More Cladding Solutions

Shadow Line

V Line

Weatherboards

Castellated

Fixed Gap

Free Estimations
& Support

Huge Range of
Woodgrain Finishes

Want some
samples?

Need more
technical info?