In contrast to gypsum boards, gypsum fibreboards are not covered with cardboard. They consist of a bonded gypsum core to which cellulose fibres are added. The fibers provide the necessary stability of the board. Factory impregnation ensures suitability in the sanitary area. They are normally classified as non-combustible building materials. Gypsum fibreboards are regulated in DIN EN 15283-2 and are marked with GF. They are used in drywall construction, especially in areas with increased requirements for stability, fire, sound or thermal insulation. Gypsum fibreboard is also used for precast screeds.
Source: bauwion
of gypsum and gypsum fibre boards: The boards should be stored horizontally and evenly, i.e. e.g. on dry pallets or tightly lying lumber. When storing plaster panels, the permissible static load limit of the ceiling is quickly reached. The panels must therefore be stored taking into account the weight of the panels and the permissible ceiling load-bearing capacity, with as much distance as possible between the individual pallets.
Processing of gypsum and gypsum fibre boards: Gypsum products must be protected from the effects of moisture on the construction site during transport, storage and installation. In particular, products without hydrophobic treatment are quickly damaged by moisture, but also by deformations. Material delivery and processing should therefore only begin when the façade envelope including the roof offers functioning protection against moisture/precipitation. After installation, the panels should not be exposed to prolonged humidity above 80%. Sufficient ventilation must be ensured, especially when interior plastering or screed work is carried out at the same time, in order to avoid damage to the drywall walls due to increased humidity. [...]
The quality level is to be selected depending on the further coating/cladding of the wall. It should be noted that markings in grazing light can never be completely avoided due to the handcrafted production of the smooth wall surface. However, they are significantly reduced if an increased quality level (Q3 or Q4 or Q3 gypsum fibre or Q4 gypsum fibre) is carried out. At quality level 4, they are minimized within the scope of the craftsmanship possibilities, but an absolutely flat and shadow-free execution is not feasible. For an optimal result, comparable lighting conditions should already be available during the execution of the filler work as during acceptance or later use.
Source: bauwion
