Classification of roofs/roof coverings exposed to external fire per EN 13501-5

Class B_roof(t1) as per Table 1: classification for roofs according to the EN 13501-5, using ENV1187 – test method 1

• a.      External and internal fire spread upwards < 0,700 m
• b.      External and internal fire spread downwards < 0,600 m
• c.       Maximum burned lenght external and internal < 0,800 m
• d.      No burning material (droplets or debris) falling from the exposed side
• e.      No burning / glowing particles penetrating the roof construction
• f.        No single through opening > 25 mm²
• g.      Sum of all through opening < 4500 mm²
• h.      Lateral flame spread does not reach the edges of the measuring zone
• i.        No internal glowing combustion
• j.        Maximum radius of the fire spread on ‘horizontal’ roofs, external and internal < 0,200 m

Class F_roof(t1)

• a.      No performance determined

Class B_roof((t2) as per Table 2: classification for roofs according to the EN 13501-5, using ENV1187 – test method 2

• a.      For both test series at 2 m/s and 4 m/s wind speed:
• b.      Mean damaged lenght of the roof covering and substrate ≤ 0,550 m
• c.       Max damaged lenght of the roof covering and substrate ≤ 0,800 m

Class F_roof(t2)

• a.      No performance determined

Table 3: classification for roofs according to the EN 13501-5, using ENV1187 – test method 3

Class B_roof(t3) :         TE ≥ 30 min. and TP ≥ 30 min.

Class C_roof(t3) :         TE ≥ 10 min. and TP ≥ 15 min.

Class D_roof(t3) :         TP > 5 min.

Class F_roof(t4) :          No performance determined

 

Table 4: classification for roofs according to the EN 13501-5, using ENV1187 – test method 4

Class B_roof(t4)

• a.      No penetration of the roof system within 1 h
• b.      Preliminary ignition test: after withdrawel of the flame: specimen burns < 5 min.
• c.       Preliminary ignition test: flamespread across < 0,38 m

Class C_roof(t4)

• a.      No penetration of the roof system within 30 min
• b.      Preliminary ignition test: after withdrawal of the flame: specimen burns < 5 min.
• c.       Preliminary ignition test: flame spread across < 0,38 m

Class D_roof(t4)

• a.      Roof system is penetrated within 30 min, but not in the preliminary ignition test
• b.      Preliminary ignition test: after withdrawal of the flame: specimen burns < 5 min.
• c.       Preliminary ignition test: flame spread across < 0,38 m

Class E_roof(t4)

• a.      Roof system is penetrated within 30 min, but not in the preliminary ignition test
• b.      Flame spread is not controlled

Class F_roof(t4)

• a.      No performance determined

For other products type classification: https://annayyachandrashekar.blogspot.com/2021/02/fire-test-to-building-material.html

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