Installation: Ceilings

Fermacell can be used for ceiling and sloping roof applications. Where Fermacell is used in these cases it provides an ideal base for subsequent installations of partitions because of its excellent screw holding capabilities. When installing a ceiling using Fermacell, the same considerations apply as for walls, except that the fixing centres and the spacings of the supporting members are altered in accordance with the table below. It is also important to take into account the additional weight of Fermacell when compared to plasterboard. For this reason it is recommended that help is sought when installing Fermacell in ceiling applications. The ability of Fermacell to be fixed to timber substructures using pneumatically applied nails or staples is a particular benefit in these cases. The table below gives full details of the load-bearing members of the supporting structure for ceilings. Where these details are not used, the deflection of the supporting construction must not exceed 1/500 of the effective span.