DeltaOrb-MW Fixing Details
Crest fixing only. One fixing every second crest
Panel 
Thickness 
(mm)
Fixing into Steel
Fixing into Timber
75
Tek 14 x 135 Hex Head Screw
T17 14 x 150 Hex Head Screw
100
Tek 14 x 150 Hex Head Screw
T17 14 x 175 Hex Head Screw
125
Tek 14 x 175 Hex Head Screw
T17 14 x 200 Hex Head Screw
150
Tek 14 x 200 Hex Head Screw
T17 14 x 230 Hex Head Screw
SPECIFICATIONS
- M W
- M W
Detail A
Handling & Installation
DeltaOrb-MW core material is fibrous as such it is easy to fracture 
the mineral wool fibres if handled and installed incorrectly.  Please 
ensure that correct lifting equipment is used when the panels 
are transported and lifted into position. Refer to the Handling & 
Installation Manual - Roof Systems for the correct Crane & Sling 
Procedures. When installing Mineral Wool panels only step onto 
the section of the panels that are supported by the underneath 
roof structure. Do not step on unsupported spans. Once installed 
it is classified as trafficable for maintenance purposes only and all 
traffic should only be on the supported roof sections.
Use Cyclone Plate and Neo Washer on each fixing.
Upon Installation the overlap needs to be stitch screwed or riveted every 300mm.
Please refer to the web page for the available colour range, paint 
finishes and relevant warranty conditions.
DeltaOrb-MW Acoustic Values
Frequency
50mm
125mm
100
15.41
15.00
160
16.40
15.09
200
18.81
17.70
250
19.70
18.51
315
21.39
19.40
400
22.31
19.69
630
23.40
19.10
800
23.69
17.31
1000
25.61
18.29
1250
21.01
30.10
1600
20.00
36.19
2000
34.79
37.30
2500
41.70
37.09
3150
44.10
35.69
5000
44.61
39.90
STC
24.00
23.00
RW
25.00
24.00
Early Fire Hazard Properties AS 1530.3:1999
AWTA Test Report 21-003529 19/07/21
Index
Test Range
External Top Skin
Ignitability
0-20
0
Spread of Flame
0-10
0
Heat Evolved
0-10
0
Smoke Developed
0-10
3
As at the stated Version Date all of the information 
contained in this document is correct. Please check 
on our WebPage to ensure that you’re referencing the 
current version. 
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 07 3271 2170    
Sydney Depot: 11 The Old Northern Road, Narellan, NSW 2567   P: +61 02 4611 7712      
Version Date: 2025-12-04
DeltaOrb-MW Spanning Recommendation
Due to the friable nature of Mineral Wool we recommend that 
the maximum unsupported spanning is:-
75mm - 2500mm
100mm - 2500mm
125mm - 3000mm
150mm - 3000mm
Acoustic Values
Acoustic Testing has been performed in compliance with 
the requirements of AS 1191-2002 “Acoustics - Method for 
Laboratory Measurement of Airborne Sound Insulation of 
Building Elements”.
The procedures specified by AS/NZS ISO 717.1:2024 were 
used to calculate the Sound Transmission Class (STC) and 
the Weighted Sound Reduction Index Rw = 25 dB.

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