Behavior under Fire

Fire behavior of building materials

KR = no smoke
KBA = no burning drops / dripping

DIN 4102-1 Requirements KR KBA
A1 non-flammable x x
A2 non-flammable x x
B1 flame retardent x x
B2 normally flammable   x
B3 easily flammable    

About Flame Retardant Building Materials

Although a directive in Germany (MLüAR 2005) stipulates that only non-combustible materials must be used on air ducts, materials classified as "flame-retardant" are nevertheless permitted.

Information provided without guarantees

High Temperature Tests