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Roofing Test with Burning Brands

EN 1187 Test 1

This European Specification specifies four methods for determining the performance of roofs to external fire exposure. The four methods assess the performance of roofs under the following conditions:

Test 1 - with burning brands

Test 2 - with burning brands and wind

Test 3 - with burning brands, wind and supplementary radiant heat

Test 4 – with two stages incorporating burning brands, wind and supplementary radiant heat

The tests assess the fire spread across the external surface of the roof, the fire spread within the roof (Tests 1, 2 and 3), the fire penetration (Tests 1, 3 and 4) and the production of flaming droplets or debris falling from the underside of the roof or from the exposed surface (Tests 1, 3 and 4). Tests 2 and 3 are not applicable to geometrically irregular roofs or roof mounted appliances e.g. ventilators and roof lights.

The four tests listed above do not imply any ranking order. Each test stands on its own without the possibility to substitute or exchange one for another.

The Test 1 equipment consists of:

  • A basket

Made from 3 mm diameter mild steel wire forming a mesh of approximately 50 x 50 mm. This is an open basket at the top and bottom and have four projecting feet 10 mm long, one at each corner. The outer dimensions of the basket is 300 x 300 x 200 mm deep. The mass of the basket is 650 ± 50 g.

  • Wood wool

Consists of fibres approximately 2 mm wide x 0.2 mm to 0.3 mm thick and is manufactured from softwood.

  • Balance

Used to weigh the wood wool and it has a nominal capacity of at least 2 kg and an accuracy of ± 1 g.

  • Timer

Minimum accuracy of ± 5 s over 24 h.


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