Fire test to building material

 

As per EN 13501-1 following related material can be tested and certified accordingly:

1.  Construction products, excluding floorings and linear pipe thermal insulation products;

2.  Floorings;

3. Linear pipe thermal insulation products.

 For roofing products: https://annayyachandrashekar.blogspot.com/2021/02/classification-of-roofsroof-coverings.html

There are many standards which deal with this same subject and they are as follows:

     1.      EN 13501-1

     2.      NF P92 507

     3.      DIN 4102-1

     4.      BS 476 / 6 & 7

 

All these standards says to refer to these standards for testing the materials: ISO 1182, ISO 1716, EN 13823 and ISO 11925-2

 

Let us see which are the classification made as per standards:

1. Classification of Fire, behavior is classified as A1 class, A2 Class, B, C, D, E, and F Class

            A1 : Non combustible

            A2: Non combustible

            B: Really limited contribution to fire

            C: Limited contribution to fire

            D: Medium contribution to fire

            E: High contribution to fire

            F: Highly combustible.

2. Smoke is classified as s1, s2 and s3.

            s1: Emission of smoke absent or weak

            s2: Emission of smoke of average intensity

            s3: Emission of smoke of high intensity

3. Droplets is classified as d0, d1, and d2.

            d0: No dripping

            d1: Slow dripping

            d2: High dripping

Let us see how these standards classify the products.

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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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Resistance to root penetration

Resistance to root penetration property of coating / sheet membranes can be tested as per European standard EN and EN 13948. This test with root protection membrane, roof and waterproof primer layers and greenhouses for testing the resistance to the penetration of liquid surface treatment material according to the FLL (Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau) rules for planning, construction and green roof maintenance, ISO / EN standards. 

In this test, the membrane (bitumen, plastic, polyurethane, cementitious acrylic, polyurea and rubber flexible plates, liquid applied kits…) is exposed to root penetration in test containers for a certain period of time. The containers are mounted in a modern greenhouse dedicated to climate control. 

After the testing period, the growing substrate is taken away and the behaviour of the test samples is assessed to observe if any root penetration has occurred. The growing period is 2 years as this period is the minimum time necessary to obtain reliable results.

Generally, rhizomes of bamboo grasses are very dangerous for waterproof membranes and these are used to grow in the applied or membrane installed container.

Thanks for the image: https://lewisbamboo.com/how-bamboo-grows/

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