Damaged Renders
difficult substrates etc.
It is especially in renovation jobs thatwe are not infrequently faced with substrate problems which cannot be solved or are not best solved with coatings alone. Whether in exterior or interior areas, perfect coating substrates are a rare occurence.
First of all, there are numerous different short comings in or even damage to the render. The commonest types of damage include spreading cracks, loss of pointing between masonry and flaking of the render. However, many other difficult substrates are frequently encountered in practice. Uneven rendered surfaces, differences in texture due to partial repairs to the render, excessively coarse or excessively fine surface textures, chemically stripped surfaces, mixed substrates of all kinds, unattractive concrete surfaces or fair-faced masonry, uneven transitions to adjacent surfaces - the list go on.
Keim Universalputz and Keim Universalputz-Fine, both thin layer renovating renders based on lime cement, are technicaly mature, durable and economic renovation solutions to all these problems.
Simply applying one ofthese two all-around renders from Keim,if necessary with embedded mesh, onto a sound existing substrate, provides a perfect surface and an ideal base for subsequent coating. In addition, this is considerably simpler and more efficient than laborious partialrepairs or costly replacemnt of the entire render structure.
The result is a perfect substrate for subsequent coating which is ideally suitable even for pure silicate paints such as Keim Purkristalat.
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