Mineral Wool Insulation in Timber Construction

Many of the advantages of wood, including load-bearing capacity, availability of raw materials, climate neutrality and building physics coincide with those of mineral wool, i.e. glass wool and rock wool. In use it combines high summer and winter thermal insulation with good sound insulation and meets the fire protection requirements for multi-storey wooden buildings from building class 4 upwards. In order to prevent smouldering fires in the cavities of load-bearing or non-load-bearing timber frame structures, the building regulations for building class 4 contain strict regulations regarding flammability and the melting point. The melting point is around 1000 °C, a requirement that mineral wool meets. Cavity-free walls and ceilings, such as those made of cross laminated timber, represent a massive construction method whose reaction to fire is determined separately. The outer thermal insulation layer, which can be plastered, also provides additional fire protection.

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