If the stone plaster around your house has minor damage, there is no need to worry. You can easily repair this damage yourself with the help of a few practical tips. Here you will find out how best to repair the stone plaster.
There are many different types of plaster around the house, which are usually not just used as purely visual highlights. Stone plaster is a particularly robust plaster. Its application is a little more complex, but it is one of the particularly strong plasters.
The processing of the colored stone plaster is similar to that of the simple and coarser stone plaster. There are also different grain sizes, with a wide selection from very fine to coarse. Stone plaster is particularly popular for use on the base in outdoor areas. But even if this plaster is particularly stable and robust, damage can still occur here, which needs to be repaired.
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Repairing stone plaster – large areas
As robust as stone plaster is, it can be difficult to work with. Especially if it is very coarse-grained, the amount of work is greater than with fine-grained plaster. A little sensitivity is required, especially when it comes to mending and repairing the stone plaster. Larger areas are easier to repair than small, isolated damage. If stone plaster with a suitable grain size is not available, mortar is used. This can happen more often, as ready-made plaster is no longer available, especially in old buildings, as the stone plaster is usually a homemade mixture.
To repair larger areas, the damaged area must first be freed of loose plaster. This can be done with a spatula or carpenter’s hammer. The now-free area is coated with a primer so that the plaster adheres better to the surface later. The free area is now plastered generously with mortar. The fresh mortar can be applied slightly over the old plaster. Pebbles roughly the size and structure of the old plaster are now thrown into the still-fresh mortar and carefully pressed down with a trowel. Always keep an eye on the old structure so that the repair is not noticeable. Before the plaster hardens, carefully paint the transitions between the fresh and old plaster with a damp brush so that a seamless transition is created. This way the repair is hardly noticeable after painting.
Touch up stone plaster on small areas
It is not only large areas that can be repaired with plaster. Even a spot repair can be mastered with a little caution. If the area is very small, a little mortar can be carefully applied to the damaged area with a spatula or a paintbrush. Here too, care must be taken to ensure that there is no loose or porous plaster left on the masonry. If it is not possible to put stones into the mortar, the structure can also be improved with a damp brush. To do this, always tap the plaster briefly with light pressure. This creates a rough structure that is also hardly distinguishable from the old one after drying.
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The color should of course also be matched to the old plaster. If necessary, paint the entire wall so that there are no major color differences. The color can also be mixed by a specialist according to the color chart. This saves the work of painting the entire wall, as the color difference is rather small this way.
