Fire protected building structures and methods for fire protecting building structures

A method for establishing a facade for a building, said method comprising:

• lining the outer face of a building wall (210) with a mineral fibrous sheet material (220);
• fastening brackets (230) to said outer face of said building wall (210);
• and
• mounting a facade cladding (240) to said brackets (230);
• wherein said brackets (230) are mounted such that a cavity (250) is formed between said building wall (210) and facade cladding (240);
• wherein said mineral fibrous sheet material (220) has a Temperature Index measured according to ISO 4589-3:2017 of 400° C. or higher, wherein said sheet material (220) has a thickness of at most 1 mm, and wherein mineral fibers forming said sheet material (220) is coated with a coating adapted for retarding fire.

A facade system comprising:

• a mineral fibrous sheet material (220) adapted for lining the outer face of a building wall (210);
• a plurality of fastening brackets (230) adapted for being mounted to the outer face of said building wall (210);
• a facade cladding (240) adapted for being fastened to said fastening brackets (230);
• wherein when mounted, said brackets 230 secures that a cavity 250 is formed between said building wall (210) and said façade cladding (240) to allow for ventilation;
• wherein said mineral fibrous sheet material (220) has a Temperature Index measured according to ISO 4589-3:2017 of 400° C. or higher, wherein said sheet material (220) has a thickness of at most 1 mm, and wherein mineral fibers forming said sheet material (220) is coated with a coating adapted for retarding fire.