WarmSpan Tray System

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Viking WarmSpan is a warm-roof-on-steel roofing system for low-sloped roofs. It has been engineered in New Zealand and is the country's simplest, most energy efficient and cost-effective warm roof system.

Viking's full proprietary, BRANZ appraised WarmSpan system is made up of three components: a wide-spanning steel tray roof deck that also forms the vapour barrier; Kingspan Kingspan Polyisocyanurate (PIR) rigid insulation panels are adhered on top, waterproofed with one of Viking membrane systems.

Viking WarmSpan is not just a roofing system. It is a tool that provides building owners and architects with a fully-engineered; energy efficient low-slope roof system; facilitating a smarter method for a design and construction.

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Viking WarmSpan has been specifically engineered and tested to comfortably exceed New Zealand’s Building Code’s minimum standards. The WarmSpan system has a spanning ability between purlins of up to 3.6m (versus the 400mm centred joists required under a heavy 17mm plywood substrate for a traditional membrane roof).

This reduces a building’s overall structural cost without compromising the integrity of the building and delivers increased performance and greater durability.

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Viking WarmSpan avoids using unnecessary components such as mechanical fasteners and cover-boards, producing a simple and energy-efficient three-layer system.

Components of a Viking WarmSpan system:

  • Viking WarmSpan proprietary steel-tray substrate

  • Kingspan Polyiso insulation panel (including tapered)

  • Any of Viking’s sheet membrane systems

Product Features

  • The industry’s only NZ Engineer-accredited warm roof system
  • Avoids unnecessary components = simplicity and thermal efficiency
  • Cost-effective
  • Spanning ability
  • Less weight than a traditional membrane roof
  • No fasteners required means no thermal bridging
  • Highest possible fire rating – Group 1S
  • Integrated vapour barrier (one less layer than other systems)
  • Strong wind uplift resistance
  • Polyiso board supplied by the world leading rigid insulation manufacturer
  • Specialised two-part foam adhesive to secure panels to steel tray (avoids mechanical fasteners and thermal bridging)

  • Compatible with any Viking membrane roofing product; including torch-on membrane

  • Tapered option = promotes watershed

  • Highest R-Value per thickness = maximum ROI

  • Installed only by Viking Licensed Applicators

  • 20-year product warranty

  • Full System Warranty Option: 20-years

  • BRANZ appraised

Viking WarmSpan in Action

Aside from the obvious savings in materials, and the huge labour costs involved in installing a timber substrate, the first stage of a WarmSpan system of laying a metal roofing tray substrate and keeping the water out of a building, is achieved very quickly. The client loves this as they are able to introduce internal trades much earlier than usual, reducing the build time significantly.

Dave Taylor - Dave Taylor Roofing Ltd

For a list of Viking WarmSpan accessories click here.

For all Viking WarmSpan specification documents, CAD details, product technical statements, CodeMark and BRANZ certificates click here.

Thanks for contacting us. We will be in contact soon to discuss setting up a presentation with you. Rest assured that in working with Viking Roofspec we will assist you in choosing the right roofing or waterproofing solution to protect your (or your customer's) most important assets.

In the meantime feel free to call us on 0800 729 799.

Kind regards

The Team at Viking Roofspec

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Thanks for contacting us. We will be in contact soon to discuss your project. Rest assured that in working with Viking Roofspec we will assist you in choosing the right roofing or waterproofing solution to protect your (or your customer's) most important assets.

In the meantime feel free to call us on 0800 729 799.

Kind regards

The Team at Viking Roofspec

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