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    diffrence between thremal barrier and ignition barrier

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    Thermal Barrier – A thermal barrier as far as building code is concerned, is any product that has been ASTM tested and is considered to have a “15-minute thermal barrier” or an “index of 15”. An example of a thermal barrier is 1/2” sheet rock, 1/4” plywood or particleboard, and some fire proof coating.

    Ignition Barrier – a product that prevents the ignition of the product which it is applied to from a spark, or from direct heat, but does not protect from direct flame over a period of time. Ignition barriers are usually spray on or brush on coatings.


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