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 (visit the page)
Test 3 – with burning brands, wind and supplementary radiant heat (visit the page)
Test 4 – with two stages incorporating burning brands, wind and supplementary radiant heat (visit the page)
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 3mm diameter mild steel wire forming a mesh of approximately 50 × 50mm. This is an open basket at the top and bottom and has four projecting feet 10mm long, one at each corner. The outer dimensions of the basket is 300 × 300 × 200mm deep. The mass of the basket is 650 ±50 grams
- Wood wool – Consists of fibres approximately 2mm wide × 0.2mm to 0.3mm thick and is manufactured from softwood
- Balance – Used to weigh the wood wool and it has a nominal capacity of at least 2 kilos and an accuracy of ±1 gram
- Timer – Minimum accuracy of ±5 seconds over 24 hours.