Flame spread rating

Flame spread rating,

Definition of Flame spread rating:

  1. Rough measure of a materials propensity to burn rapidly and spread flames. It is based on an arbitrary scale in which asbestos-cement board has a value of 0, and the red-oak wood has 100. US building codes specify maximum flame spread of 25 for insulating partitions installed in exposed locations.

Meaning of Flame spread rating & Flame spread rating Definition