Korjausmassa

Korjausmassa, often translated as repair mortar or patching compound, is a material used to fill cracks, holes, or other imperfections in surfaces. It is typically composed of a binder, such as cement or gypsum, aggregate, and various additives to control properties like workability, setting time, and adhesion.

The primary function of korjausmassa is to restore the integrity and appearance of damaged substrates. It can be applied to a wide range of materials including concrete, plaster, masonry, and even wood in some formulations. The selection of the appropriate korjausmassa depends on the type of surface, the size and depth of the damage, and the environmental conditions where the repair will be made.

Application methods vary but often involve mixing the dry powder with water or a liquid activator to achieve a workable paste. This paste is then applied using tools like trowels, spatulas, or putty knives. After application, the korjausmassa hardens, creating a durable patch that can often be sanded, painted, or otherwise finished to match the surrounding surface. Different types of korjausmassa are formulated for specific purposes, such as high-strength repairs, flexible patching, or rapid setting.