DeltaDualCore™ Panel Awning Systems 
 
Revision 1-12 
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3 DeltaDualCore™ System 
3.1 
Description of Application 
This fire engineering report documents the assessment of DeltaDualCore™ panel awning and patio systems 
when used as a Class 10a structure (awning or patio) attached or adjacent to a Class 1a building positioned 
directly adjacent to the site boundary pursuant to NCC 2022 Housing Provisions Standard & Volume 2 and 
installed to the requirements of Section 4.4.  
3.2 
Description of System 
The DeltaDualCore™ roofing system comprises: 
a) 
A sandwich panel roof system (refer to Figure 3-2, Figure 3-4 to Figure 3-5) 
b) 
Non-combustible support structure 
c) 
Non-combustible plumbing fixtures (gutters and downpipes) 
The DeltaDualCore™ sandwich panel roof system comprises steel outer facings (0.45 mm Colorbond® 
steel upper facing and 0.55 mm UniCote® Steel lower facing – see Figure 3-1) with a composite core 
containing EPS-FR and mineral wool as shown in Figure 3-1 (i.e. the patented DeltaDualCore™ composite 
panel). The core comprises separate parts mineral wool and EPS-FR bonded together along a stepped 
seam as shown in Figure 3-2. The mineral wool component shall have a minimum length of 900 mm as 
shown in Figure 3-2.  
Delta Panels produce the DeltaDualCore™ panel in two variations (see Figure 3-3), one with a trapezoidal 
upper facing (referred to as the DeltaTrim™ system) and one with a corrugated upper facing (referred to 
as the DeltaOrb™ system). The composition of the facing material for both the DeltaTrim™ and 
DeltaOrb™ systems are identical, it is only the profile of the upper facing that is varied. Based on the 
assessment provided in Section 3.3.2, the profile of the upper facing does not have any significant effect 
on the achieved fire performance of the DeltaOrb™ and DeltaTrim™ panels. As such, the DeltaOrb™ and 
DeltaTrim™ panels may be used interchangeably and the outcomes of this assessment remain applicable 
to both panel types. 
Material specifications as given by Delta Panels is quoted in Table 3-1. 
 
 

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