Main Frame ○ 4 ○ 5 ○ 6


In the ENV1187 Test 4 Roofing Test, the test sample is placed in a Sample Holder which is placed on the Specimen Cover and an air seal is created. The Specimen Cover can be tilted and supported at an angle of 45°or horizontal depending on the type of roof sample being tested. The underside of the sample can be viewed during the test through the viewing window in the Specimen Cover which is mounted on the Sample Trolley Assembly to move the Sample into the correct position for testing. The height of the Sample Trolley can be adjusted. The Sample Alignment Jig and a system of Stops are provided to reach the correct position.


The Burner Wand Assembly is used as the ‘burning brand’. The brand comprises a simulated town gas flame.


The Suction Box Assembly is connected to the Specimen Cover with a Suction Hose to simulate the effect of ‘wind’. A pressure reduction on the underside of the sample is established and controlled using the Inclined Tube Manometer and Speed Controller Assembly mounted on the Dual Diverter Stand. There is also a blow-out panel on the other side of the Specimen Cover.


The Radiant Panel Assembly (mounted on the Main Frame) provides the ‘supplementary radiant heat’ source directed onto the surface of the test sample. The Radiant Panel can be tilted and supported at an angle of 45°or horizontal. The Radiant Panel consists of four surface combustion heaters which are individually controlled from the Dual Diverter Assembly and Control Box. The air and gas flow to each burner can be adjusted to provide an incident radiant heat flux distribution such that the heat flux meters each measure 12 ±1.5 kW/m².


○ 3 ○ 2 ○ 1 The Main Frame includes:


1. Radiant Panel 2. Sample Holder with Calibration Assembly 3. Specimen Cover with Suction Box Assembly 4. Viewing Window 5. Guide Rails 6. Sample Trolley 7. Sparker Box (not shown) 8. 4 Flexible Gas Burner Hoses (not shown)


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