Combustibility is the measure of how easily an insulation material will catch fire through fire exposure or combustion. This is an important property to consider when insulation is used for construction.

Glasswool is non-combustible, tested according to SANS 10177 Part 5 and achieves a Class 1 fire index rating when tested to SANS 10177 Part 3 and will  not support a fire or flame spread.
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