Restoration plaster dries moist interior walls and masonry

Moisture in masonry can be caused by various causes. If the causes of moisture formation have been removed, the important drying phase of the masonry, which is problematic especially in older buildings, begins. Restoration plaster can be helpful during this phase.

Restoration plaster and the removal of residual moisture and salt crystals on interior walls

After a moisture attack in older masonry, it is very important to effectively eliminate the cause of the moisture attack. During the subsequent drying phase, however, correct action and above all the correct treatment of the affected walls is also important. Particularly in older buildings, during this drying phase, crystallization and blooming of salts on inner walls, which can be detrimental to the building structure, often occur. The harmful crystals form during the evaporation of moisture. Under certain circumstances, they can even lead to the chipping off of the plaster.

Recrystallization counteract with the help of restoration plaster for inside

Sanierputz includes by its special effect, the resulting salts during the drying phase and thus effectively prevents the chipping of the plaster layer, without preventing the continuous drying of the masonry. The material is processed in several steps:

  • First, you must thoroughly rid the masonry of old coatings, old plaster and other materials.
  • Optimal adhesion is important in order for the restoration plaster to have an optimal effect. For a good anchoring of the restoration plaster provides a corresponding Spritzbewurf.
  • Now you can apply the restoration plaster to the wall. Depending on the degree of salinisation, apply it in one or more layers.

Important: recognize and eliminate the causes

With the help of restoration plaster, you can counteract a continuous destruction process of attacked interior walls. However, this only makes sense if you have previously recognized the cause of the damp walls and, above all, turned them off. For this, you should have a detailed analysis of the masonry (leave). The next step is to protect the masonry with suitable structural measures so that further moisture formation can be safely stopped. This can be implemented, for example, by horizontal barriers or vertical seals. After eliminating the causes, it can then go to the renovation of the interior walls using restoration plaster.

What causes the salts in the masonry actually?

Moisture and salts usually occur together. The salts are mineral salts which once bound the masonry mortar. Due to the moisture they were released from the material and can reach the surface of the masonry. If it is ascending moisture that has formed in the masonry, it can also be salts from the soil. So it's not just the humidity that's the real problem. The salt makes matters worse. It crystallizes on the surface and leads to the flaking of plaster and paint. Because salt is hygroscopic, it also attracts more moisture from around the inner wall. In addition, the salt crystals ensure that the pores in the masonry are narrowed and thus hinder the natural drying of the walls.

Product Image: Matej Kastelic / Shutterstock

Video Board: Gypsum v Lime Plaster - Keeping Solid Walls Breathable