WarmSpan Tray System
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.
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.
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:
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Viking WarmSpan proprietary steel-tray substrate
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Kingspan Polyiso insulation panel (including tapered)
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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
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Specialised two-part foam adhesive to secure panels to steel tray (avoids mechanical fasteners and thermal bridging)
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Compatible with any Viking membrane roofing product; including torch-on membrane
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Tapered option = promotes watershed
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Highest R-Value per thickness = maximum ROI
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Installed only by Viking Licensed Applicators
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20-year product warranty
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Full System Warranty Option: 20-years
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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 LtdFor 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.
