It consists of seeing the resistance of a material to fire. For this, the test procedure indicated in the International Standard ASTM E-84-12 "Standard test method for the characteristics of superficial burns of construction materials" (NFPA 255, ANSI / UL 723 and UBC 9-1) must be followed. ) In which it is indicated in detail how it should be done to be sure that it is so resistant.
The result can be measured through the following graph;
To explain the flame spread index, it is taken as an absolute value in a range from 0 to 100, where the absolute 0 of this graph corresponds to the phlegm spread index of a concrete, which as we all know, is a non-material material. fuel. And where 100 corresponds to the flame spread index of a fine wood, which is a very easy material to burn.
Now, if we decrease the value from 100, as this number decreases, it means that it has greater fire resistance, and when it has a value equal to or less than 12, that material is considered non-combustible.
Flame Spread Index in SIESA products
For example, our company has four products that can be affected by fire. Phase 2 PVC sheets have a flame spread index of 12, making them a non-combustible material.
On the other hand, we have fiberglass gratings, profiles, and cable trays with a flame spread index of 15, which is considered a non-combustible material. This indicates that it is a material with very high fire resistance.
Our products made of fiberglass (reinforced plastic) are an effective option against possible construction accidents. This is how we distinguish ourselves from our competition, who offer products with a Flame Spread Index of 25.
