Last edited 28 Sep 2020

Metal profile cladding


[edit] Introduction

Metal profile sheets can be used as a form of external cladding, and are commonly used for agricultural, industrial, retail and leisure buildings. Sheets are manufactured in a range of corrugated and other profiles, such as trapezoidal, sinusoidal or half-round. The profiles are manufactured from sheets fed through banks of forming rollers. Modern manufacturing techniques allow metals to be pre-aged, coated with preservatives, or painted a wide range of hues and texture.

Profiled metal cladding.jpg

Metal profile sheets can be installed vertically, horizontally or diagonally, and are capable of being applied to curved facades and other complex shapes.

[edit] Types of metal

The four types of metal that are most commonly used are:

[edit] Types of installation

[edit] Built-up sheeting

Built-up sheeting is assembled on site, and generally consists of four components:

Built-up sheeting can be fitted in vertical, horizontal or diagonal patterns, and is usually fixed in place by self-tapping fixings designed to match the chosen finish. While curved systems are possible, they require careful installation.

[edit] Composites

Two metal skins are bonded to an insulating core, forming a composite ‘sandwich’ panel. The metal component, can be aluminium, zinc, stainless steel, titanium and so on, available in a wide variety of colours, finishes and profiles.

For more information, see Metal composite panels.

[edit] Cassettes

These are similar to composites, and include insulation and liners, but differ in that they are designed with easy-to-use interlocking jointing systems for quick installation. They are suitable for horizontal or vertical application on low and high-rise buildings.

[edit] Standing seam

This system can be supplied as either pre-insulated panels or as sheets that are formed and crimped on site before being applied to a plywood or similar substrate. Standing seam systems have no exposed mechanical fasteners, but use a special weathertight clipped joint instead, which creates a distinctive projecting seam. The advantage of this system is that it is very flexible and can be used to form curves and provides unbroken finishes across walls and roofs.

Standing seam roof.jpg

[edit] Rainscreen

A rainscreen (sometimes referred to as a ‘drained and ventilated’ or ‘pressure-equalised’ façade) is part of a double-wall construction. Typically rainscreens are formed of relatively thin, pre-fabricated panels. The rainscreen itself simply prevents significant amounts of water from penetrating into the wall construction. Thermal insulation, airtightness and structural stability are provided by the second, inner part of the wall construction.

For more information, see Rainscreen.

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