LPS 1181 part 2 is a large scale, internal wall and ceiling test, designed to measure fire spread.
It’s different to LPS 1181 Part 1 as it’s free standing without steel supports.
The pictures on the left below show the test strip before and after the test. Before the test, you can see that, similar to LPS 1181 part 1, there’s a large wooden crib which sits on the table.
There are horizontal flames spread failure points indicated with the vertical red lines and thermocouples are embedded within the core of the insulation and attached to the external face.
After the test you can see in the bottom left picture that the fire damage was highly contained to the region of the fire source. The hybrid insulation core of the insulated panels resisted flame spread and propagation.
The picture below shows the intensity of the fire given off from the fire rig.