26 Nov ISOTEX, fire safety of building facades (Lepir 2 Test)
For some years now, the member countries of the European Community have been developing new regulations in regards to fire behaviour on the façade of construction systems. The first country to have adopted rules that go in this direction is France, which has already published regulations in this sense and already has, on its territory, important laboratories recognised and equipped to assess fire behaviour on the façade systems.
On November 9th, the EFECTIS laboratory conducted the Lepir 2 test on a wall made with Isotex wood-cement formwork blocks with an internal 23 cm insulation thickness of EPS-graphite. The façade was subjected to a fire representative of a fully developed violent fire inside a building and Isotex passed the test brilliantly as there was no spread of the flames on the concrete wood wall.
HOW IS THE LEPIR 2 TEST CARRIED OUT IN DETAIL?
The test is carried out on test cells made specifically, simulating a building with ground floor + 2 floors, with the two lower floors equipped with windows.
The fire source consists of 600 kg of wood placed on the ground floor where the windows open onto the facade to be tested. The behaviour of the facade is then assessed for at least 60 minutes. If after this time the fire has not reached the base of the second floor, and neither the flames nor the smoke have entered the first floor, the construction system studied in the facade complies with the regulatory requirements.
THE CONCLUSIONS OF THE LEPIR 2 TEST
The conclusions of this test will soon be formalised in an evaluation by the EFECTIS laboratory which is recognised by the French Ministry for its dual competence in the field of resistance and reaction to fire.
This test and the consequent laboratory evaluation complete the ISOTEX references for its construction system in terms of fire behaviour.