Fibrous plastering is a form of precast plasterwork. The plaster casts are reinforced with open mesh hessian scrim and strengthen with timber laths. This results in strong casts that are light in weight. Another advantage of Fibrous plastering is the saving in cost when reproducing several similiar types of moulded work which can be cast from the same mould. These casts can be prepared in a workshop, as the building progressed separately. When the appropriate stage of the building is reached the casts can be fixed by means of zinc screws to timber joists and the joints wadded with scrim and stopped (filled in) and made good with plaster. Quoted from Plastering - JB Taylor - 5th Edition.

In the workshop, fibrous plasterer runs the half dome model and getting ready to make casts from it.