fermacell® fibre gypsum products consist of 80% gypsum – a mixture of natural gypsum and flue gas desulphurisation (FGD) gypsum – and 20% paper fibres, which are obtained from waste paper through a recycling process. These two raw materials are processed into a homogeneous mixture and, after the addition of water – without any further binding agents – are pressed under high pressure into stable boards, dried, treated with a water-repellent agent to make them hydrophobic, and cut to the required sizes.

fermacell® fibre gypsum boards do not contain any substances that are harmful to health.

The absence of adhesives means there are no unpleasant odours. The boards and the manufacturing process have been tested by the Rosenheim Institute for Building Biology with regard to healthy living and environmental protection. Due to the excellent results, the fermacell® fibre gypsum boards have been awarded the ‘Tested and recommended by the IBR’ seal of approval. Furthermore, the ECO certificate confirms that they are free from harmful substances.

No.

fermacell® gypsum fibreboards are an ideal material for all aspects of dry interior finishing and can be used universally in construction projects from the basement to the roof. Due to their material composition (gypsum and paper fibres), they are a gypsum-based building material best suited for interior use. The boards can also be used in service class 2 applications, in external areas not directly exposed to the elements.

For outdoor use, cement-bonded fermacell™ Powerpanel products should be used in accordance with the relevant building and structural requirements.

In addition to the adhesive grouting method, there are two trowel-applied grouting methods.

Adhesive joint: Only fermacell™ joint adhesive must be used to create the adhesive joint. The board edges cut to size at the factory or those sawn to a sharp edge on site must be free of dust and dry. The joint adhesive is applied to the edge of the fixed board. The next board is then pressed tightly against it. The width of the joint should then be no more than 1 mm. Depending on the room temperature and humidity, the adhesive will have cured after approximately 18 to 36 hours.

Trowel joint: To achieve a flawless, mechanically bonded joint in the trowel joint of the right-angled or mitred tile edge, the following joint widths should be used:

- 5–8 mm for 10 mm board thickness

- 6–9 mm at 12.5 mm

- 7–10 mm for 15 mm or 18 mm

The joints must be filled to the depth of the board using fermacell™ joint filler in 2 to 3 coats, depending on the quality requirements.

Joint with drywall edge: Gypsum fibreboards with drywall edges are butt-jointed, reinforced in the area of the chamfered edge using fermacell™ TB reinforcement tape or fermacell™ paper reinforcement strips, and filled with fermacell™ joint filler.

Further information can be found in the handbook: "fermacell® in drywall construction – planning and installation".

Yes, we have the relevant certificates for many of our products. These can be found directly in our downloads section.

We are committed to taking responsibility for nature and the environment. That is why we support you in collecting your single-type fibre gypsum board offcuts on site. Our partnership with local businesses enables us to optimise processes and makes taking part incredibly easy.