When deciding on the correct coating system to provide Fire protection to a combustible material such as timber, it is essential that the products meet the standards set out by the new Euroclass System for the fire safety classification of building materials.
The European Reaction to Fire classification system (Euro classes) is the EU common standard for assessing the qualities of building materials in the event of a fire. Euro classes arise from classification systems for ‘reaction to fire’ performance of construction products.
IMPORTANT: The old British Standard Testing and Classifications referred to as Class 0 / Class 1 Surface Spread of Flame should no longer be used.
The test methods are totally new and involve exposing the product to direct flame and is called the Single Burn Test or SBI Test.
This test is designed to simulate the flame exposure that would be experienced by material lining the walls of a room when a “wastepaper basket” ignites next to the wall in the corner of a room.
The test measures a Fire Growth Rate (FIGRA), the heat energy contribution to the fire from the product. The result is categorised on a Fire Growth Rate Index.
A second measurement is taken to calculate the volume of smoke produced by the fire and categorised according to a Smoke Growth Rate (SMOGRA) index.
Finally, the test also measures oxygen consumption as well as carbon dioxide and carbon monoxide production. These gas concentrations help identify the heat release and the burning characteristics of the tested products.
The Standards to the Euroclass system are referred to as;
European standard – EN 13501-1 reaction to fire classification with parts
BS EN 13823: 2010+A1:2014 single burn test (SBI)
BS EN11925-2:2010 single flame ignitability test (SFI).