Magnesia screed is also called stone wood screed and consists of caustic magnesia (MgO), magnesium chloride (MgCl2) and various mineral (e.g. quartz flour) and above all organic (e.g. wood flour, wood chips, cork meal) fillers. Since the magnesium chloride it contains reacts with water, magnesia screed is usually unsuitable for damp rooms, so it is therefore necessary to be extremely careful with water when cleaning exposed screeds without a corresponding barrier layer. Due to its wood-like properties, it is well suited for use in residential construction, especially in the renovation of old buildings, as it can also be used as a composite screed on the planks of wooden beam ceilings, for example. Since magnesia screed achieves high surface strength, another area of application is in industrial and commercial construction, provided that moisture can be excluded, e.g. in sales and exhibition areas, in the textile or electronics industry or in high-bay warehouses.
Source: bauwion
