Steel Skin Details
Top Skin
0.42mm / G550 AZ150
Bottom Skin
0.55mm / G300 Z275
Max. Skin Temperature
78oC Dry Heat
Core Material Details
SL Grade Polystyrene - Fire Retardant Grade 
Thermal Conductivity
AS 1366.2/ASTM C 518
Average 0.042 W/mK @23℃
Adhesive
Thermosetting two-part adhesive
Core Density
13.5kg/m3
Panel Weight (kgs/m2) 
based on 0.6mm steel 
skins
50mm Panel
10.58
75mm Panel
10.94
100mm Panel
11.30
125mm Panel
11.66
150mm Panel
12.02
175mm Panel
12.38
200mm Panel
12.72
External Roof  
R Value (m2.K/W) 
AS/NZS 4859 Parts 1 & 
2:2018
Thickness
Winter 
(15oC)
Summer 
(23oC)
50mm Panel
1.38
1.36
75mm Panel
1.90
1.85
100mm Panel
2.52
2.43
125mm Panel
3.13
3.02
150mm Panel
3.69
3.56
175mm Panel
4.31
4.15
200mm Panel
4.88
4.68
Certificate of Conformity
CodeMark Australia Certificate - 
CM40309 & CM40436
Length Tolerance (mm)
5mm +/- 
Sheet Coverage (mm)
1000mm 5mm +/- 
Length (mm)
Cut to Length Min of 1800mm
Thickness (mm)
50, 75, 100, 125, 150, 175, 200
Minimum Roof Pitch
Building Classes 1-9   - 5º
Building Class 10        - 3º
Flatness
Standards
0.42mm 
0.55mm
Surface deformations can be 
apparent to the naked eye 
when observed in certain 
lighting conditions
Detail A
* Conduit receiver track optional addition
Detail B
Recommendations
 •  Patios & Pergolas
 •  Carports
 •  Portable Buildings
•  Home Extensions
•  Commercial Buildings 
•  Residential Buildings
Profiles Available (Underside Skin)
 •  Smooth & Elegance
*
-EPS-FR
-EPS-FR
Colour Range - Warranty
Expanded Polystyrene Fire-Retardant Grade (EPS-FR) is a 
thermoplastic that when exposed to high levels of sustained 
heat is subject to changes in its structural properties. On 
extremely hot days with no cooling wind, dark colours have 
been recorded as reaching extreme temperatures. The 
manufacturer of the steel recommends the following colours, 
subject to conditions of use, will maintain a temperature under 
78.0ºC dry heat (see clause 9, sub-clause j of our product 
Warranty). Please refer to Clause 12 of the Warranty – Roof 
Products for full details.
•  Off White / Surfmist ®              •  Hamptons White
•  Gull Grey / Shale Grey ™        •  Zinc
•  Merino / Paperbark ®              •  Birch / Dune ®
•  Mist Green / Paperbark ®        •  Armour Grey / Windspray   
•  Smooth Cream / Classic Cream ™
To maintain Warranty cover with dark colours it is therefore 
recommended that a Thermosetting Phenolic Composite 
(TPC) or Mineral Wool (MW) core be used for all colours not 
listed above.
® Colour names are registered trademarks of  
    Bluescope Steel Limited
™ Colour names are trademarks of Bluescope 
    Steel Limited
Please refer to the web page for the available colour  
range, paint finishes and relevant warranty conditions.
DeltaOrb-EPS-FR is an Insulated Roof Panel System, 
comprising of two pre-painted, roll-formed steel skins, with a 
fire retardant grade expanded polystyrene insulating core.
The top profile offers striking looks with all of the benefits of 
modern insulated panel technologies while the bottom skin 
has a roll-formed tongue and groove joining edge.
CodeMark
CodeMark Australia Certificate CM40309 certifies 
that DeltaOrb-EPS-FR panels complies with the 
stated performance provisions of the NCC2022. 
CodeMark Australia Certificate CM40346 Class 
10a Awning and Patio Roof System incorporating 
DeltaOrb-MW and DeltaOrb-EPS-FR panels 
certifies compliance with the stated performance 
provisions of the NCC2022. 
Please refer to the certificates, as displayed on our web page, 
for the exact details of the compliance.
Due to the nature of the manufacturing process the actual dimensions 
may vary. Please refer to the stated acceptable tolerances allowances.
Delta Panels Pty Ltd - ABN: 11 147 861 292
E: info@deltapanels.com   
W: www.deltapanels.com    
Head Office: 731 Boundary Road, Richlands, Qld 4077    P: +61 7 3271 2170    
Sydney Depot: 11 The Old Northern Road, Narellan, NSW 2567   P: +61 2 4611 7712      
Version Date: 2025-11-24

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