Stop beads can be used to help both the DIY enthusiast and professional plasterer to apply topcoat plaster in manageable areas at a time. This type of plaster goes off very quickly and if experience is lacking, each section should be restricted to an area of no more than 4sqm.
Plastering in comparatively small areas affords you the opportunity to ensure that the finished surface is really smooth prior to decorating. If it is not, then it is surprising how every little blemish will show up.
Stop beads can be used, not only to define the area to be plastered and provide a clear sharp edge to start the next section, but also to define sections in which a decorative feature is to be inserted. When used in conjunction with angle beads, they can be used to form perfect edges and corners around plug sockets and switches.
Having established the extent of the area to be plastered, simply nail the stop beads to the studwork that supports the plasterboard by using short galvanised nails, which can be easily removed later. The alternative is to place a small amount of plaster at intervals of about 900mm along the back of the bead and then press it firmly against the wall, holding it in position for a few minutes whilst the plaster ‘goes off’.
Don’t forget to remove the excess plaster that is squeezed out in this process, otherwise it will spoil the clean finish of the demarcation line.