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Kalzip Deck Roof System U value 0 20 pCieW.rvt:
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liner deck


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Technical Specification


Kalzip liner-deck roof systems are predominantly used for new build construction where purlin centres are greater than normal, where high density insulation is required or where low U values are required.

Affording the same benefits as the Kalzip liner roof system, the Kalzip liner-deck roof system utilises a low profile structural deck and supports the outer sheet direct off the liner-deck via clips and top hat sub purlins.

The Kalzip liner-deck roof system has the outer Kalzip standing seam roof sheet and the internal Kalzip liner-deck trapezoidal structural decking sheet laid in the same direction across roof purlins acting as the primary support.

The top-hat sub-purlins maybe fixed direct over the purlins or for wide purlin spacings further top-hats can be installed mid-span. This arrangement transfers the external roof loads as line loads to the Kalzip liner-deck when lightweight quilt-type insulation is used. When high-density insulation is used within the roof system the external downward loads (e.g. snow) would be transferred as uniformly distributed loads.

The thickness and profile of the Kalzip liner-deck is therefore determined by the purlin centres, all external roof loads, internal wind loads, the dead weight of the construction components, its walkability requirement and its non-fragility rating.

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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