The Future of Low-Slope Roofing

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

NZ engineered and certified system (Homes Solutions)
BRANZ appraised
Highest fire resistance credentials in the market (Group 1-S) — Note: not all warm roof systems offered to the market have been fire tested.
Substrate supports can be as wide as 3.6m centres, significantly reducing structural costs (versus plywood with timber supports at 400mm centres)
Lightweight roof assembly means less stress on the building structure
Tapered insulation board to promote watershed in critical areas (around drains)
Used with single-ply or two-layer torch-on membrane systems
‘Polyisocyanurate’ (PIR board) has the best R-values in the market
WarmSpan is perfect for low-risk membrane roof design/construction methods

WarmSpan Components

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

This competition has now closed. For more information on the Viking WarmSpan system, contact Viking Roofspec.

WarmSpan Tray System

Viking Roofspec

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Viking WarmSpan is a warm roof that includes a proprietary steel tray substrate, supplied by Viking, to make up a complete roof system.

The Viking WarmSpan System has been appraised for use as an insulating roof on buildings within the following scope:

the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and maximum floor plan areas; and,
on limited access flat roofs with steel structural decks subject to specific structural design; and,
with roofs constructed to drain water to gutters and drainage outlets complying with the NZBC; and,
with roofs constructed to suitable falls (refer paragraph 15.3 and 15.4 of the Viking Warm Roof BRANZ Appraisal); and,
with no integral roof gardens; and,
situated in NZS 3604 Building Wind Zones, up to, and including Extra High.

The Viking WarmSpan System has also been appraised for durability and thermal performance as an insulated roofing system on buildings that are the subject of specific design with no building height restriction. Building designers are responsible for the building design and for the incorporation of the Viking WarmSpan System into their design in accordance with the declared properties and instructions of Viking Roofspec.

Clause B1 STRUCTURE: Performance B1.3.1. The Viking WarmSpan System meets this requirement.
Clause B2 DURABILITY: Performance B2.3.1 (b), 15 years. The Viking WarmSpan System meets this requirement. See paragraph 10.1 of the Viking Warm Roof BRANZ Appraisal.
Clause E2 EXTERNAL MOISTURE: Performance E2.3.1 and E2.3.2. The Viking WarmSpan System meets these requirements. See paragraphs 15.1 - 15.9 of the Viking Warm Roof BRANZ Appraisal.
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. The Viking WarmSpan System meets this requirement and will not present a health hazard to people.
Clause H1 ENERGY EFFICIENCY: Performance H1.3.1 (a). The Viking WarmSpan System will contribute to meeting this requirement. See paragraph 14.1 of the Viking Warm Roof BRANZ Appraisal.
Clause C/VM2 FIRE PERFORMANCE (of wall and ceiling linings) - ISO9705, Group 1S = highest possible rating.

BRANZ Appraised

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