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Structural deck roof


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Flat roof Curved roof Roof facade
Technical Specification


The Kalzip structural deck roof system provides an economical solution for long span installations and eliminates the need for purlins. For enhanced acoustic absorption, decking panels can be perforated and can support mass, such as increased insulation or board, which may be introduced for more rigorous acoustic specifications.

Where structural decking is installed there is a reduced requirement for secondary steelwork. The Kalzip structural decking panel is generally laid transverse to the direction of the Kalzip standing seam roof panel and spans between the main steel rafters. Typical rafter centres would be approximately 10 to 26 feet.

The Kalzip clips are installed in a diagonal layout so that all external roof loads can be evenly distributed to the structural decking panel. The frequency of clips may be increased at theperimeter of the building where higher wind loads occur.

The gauge and profile of the Kalzip structural decking panel is therefore determined by the rafter centres, all external roof loads, internal wind loads, service loads (e.g. lighting) and the dead weight of the construction components.

For further information please download or request the Kalzip systems brochure or contact us.
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Kalzip Main Contact

Kalzip Ltd
Haydock Lane, Haydock
St. Helens
WA11 9TY
United Kingdom

Tel: 01942 295 500


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About the Company

Kalzip specialises in the international manufacture and supply of tailored metal solutions for building envelopes and is the world’s leading aluminium standing seam roofing and wall cladding system. Since being launched onto the market in 1968, over 90 million sqm of Kalzip aluminium profiled sheets have been installed on an increasingly wide variety of roofs and façades all around the world.

Kalzip is a precision engineered, multi component system with proven durability, high performance and low maintenance. Innovation, quality, technical capability, experience and service are just some of Kalzip’s key attributes with the company’s extensive research and development activities which are aimed at continually pushing the boundaries of modern construction capabilities and providing the very best building envelope solution every time.

A range of materials, finishes and shapes, virtually limitless design potential and advanced roll forming techniques have enabled Kalzip to combine functionality with stunning aesthetics on both small uncomplicated designs and world-famous, award winning projects.

Alternative products include;
• Kalzip foldable aluminium
• Kalzip solar solutions
• Kalzip Nature Roof
• Kalzip off site construction
• Bespoke fabrications
• A series of safety accessories and approved and certified system components.

In addition, Kalzip offer unrivalled levels of technical support combined with a fully established and experienced technical design service who are fully equipped and knowledgeable in the application of all Kalzip products and solutions.

With independent sites covering; North America, Europe, Middle East and Asia Pacific and sales offices worldwide, Kalzip boasts international experience with local services for customers. All Kalzip systems are installed by a fully approved, highly trained network of Teamkal contractors. For further information visit
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