Abstract: It is the object of the invention to give also the non-professional the possibility to apply, by means of this method and a template, mineral plaster in the form of clinker plastering to a wall surface. To this end a template with a network corresponding to joints and made of impregnated cardboard is applied to a continuous carrier film by means of a non-hardening adhesive, and is folded in zig-zag form. The network is removed from the carrier film and stuck to the same extent to a wall surface. Afterwards the mineral plaster is applied to the wall surface. After removing the network a clinker or brick-work like structure is attained. In the spray rendering method embodiment the network is made of paper-thin, tension-resistant material. The network and carrier film are then rolled up in a roll.