Owners, managers or users of warehousing, commercial and industrial facilities are required to mark separation walls where the wall divides fire zones of at least 2,000 m² each, and where at least one of the following conditions applies:

1. The external walls or roof of at least one fire zone are not made of non-combustible materials, or
2. The fire load density in at least one fire zone exceeds 1,000 MJ/m².

The marking must be carried out in accordance with the method specified in Annex 1 to the Regulation of the Minister of the Interior and Administration of 7 June 2010 on fire protection for buildings, other construction structures and areas, or in another manner agreed with the local District (Municipal) Commander of the State Fire Service.

Find more articles in PRO HR October 2025.