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The roof structure was enclosed at the back of the test frame with oriented strand board (OSB) that  
incorporated a 100-mm x 100-mm vent opening located at the base of the roof and a 200-mm x 
200-mm glass vision panel. 
2.2 
Orientation 
The roof specimen was tested with the exterior face of the roof exposed to the radiant heat source. 
2.3 
Crib size 
The crib size selected by the test sponsor for the relevant BAL level was Class AA, as specified in 
Table 3.2 of Section 3.8 of AS 3959:2018. 
Four cribs were used for the test, crib #1 was positioned in the roof gutter adjacent to the ridge 
edge of the valley gutter, while Cribs #2 and 3 were positioned in the valley gutter 700-mm and 
1200-mm from the drip edge. Crib # 4 was positioned just below  the ridge cap detail mid span as 
shown in Photograph 4 (Appendix A). 
2.4 
Conditioning 
The roofing part of the specimen did not include exposed timber elements. 
The specimen construction was delivered on 10th October 2023 and stored under standard 
laboratory atmospheric conditions until the test date. 
2.5 
Level of radiant heat exposure 
The level of radiant heat exposure selected by the test sponsor was Very high - 29 kW/m². 
2.6 
Selection, construction and installation of the specimen and the 
supporting construction 
The construction was organised by the sponsor, CSIRO was not involved in the selection of the 
materials. 
 
3 
Documentation 
The following documents were supplied or referenced by the sponsor as a complete description of 
the specimen and should be read in conjunction with this report: 
• 
Drawings reference ‘Delta Trim TPC-RA01’, sheets 1 and 2, Revision D, dated 30 May 2023, 
by Delta Panels. 
• 
Drawings for various components ‘200 Beam’, ‘DeltaCool Wall’, ‘Delta Trim-TPC Opp Cut 
LHS’, ‘Delta Trim-TPC Opp Cut’, ‘Delta Trim-TPC Opp Cut RH’, ‘TCP-R001 to TCP-R015’, ‘TCP-
R006-RH’, ‘TCP-R008-LH, by Delta Panels. 
 
No confidential information about the test specimen has been submitted to CSIRO Infrastructure 
Technologies 

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