Brandversuch an einer begrünten Holzaußenwandbekleidung.

Fire tests of a greened timber facade Greening of the building envelope is becoming increasingly popular. In addition to the temperature‐regulating and acoustic‐dampening effects and the binding of fine dust, green facades contribute to a harmonious cityscape. At the same time, timber construction is experiencing an upswing and therefore the combination of both systems are favored. So far, no fire tests on greened timber facades have been described in literature. For an initial assessment of their fire behaviour, a facade fire test was carried out in accordance with the German standard DIN 4102‐20. The closed and rear‐ventilated cladding of the timber facade was designed with fire stops in accordance with the general timber construction guideline (Muster‐Holzbaurichtlinie). The ground‐based plants examined were Hardy Kiwi (Actinidia arguta Geneva) and Purple Wintercreeper (Euonymus fortunei Coloratus) in well‐maintained condition. The main findings were that the greenery in front of the facade did not lead to uncontrolled vertical fire spread on the wooden facade. The burning timber facade ignited the greenery several times, but burning greenery never ignited the timber facade. There was no premature vertical fire spread on the wooden cladding. The fire stops of the wooden facade maintained their function. [ABSTRACT FROM AUTHOR]