1、Cracks in the wall structure cause cracks in the diatomaceous earth coating.
Cracks in the wall structure can cause cracks to appear on the outer wall surface. This can be due to either pre-existing cracks in the wall itself, which were not properly addressed during subsequent renovations, or to cracks that developed later due to uneven subsidence of the foundation or significant temperature changes. These cracks are typically wide and long.
When this situation occurs, resulting in cracks on the diatomaceous mud wall, appropriate measures should be taken based on the size of the cracks. If the cracks are too wide, they cannot be repaired; repairs or repainting can only be carried out after the wall structure is stabilized.
2、Cracks at joints caused by the silicon-based coating cracking.
Cracks at the base of wall joints can cause cracks to appear on the wall surface. Cracks first occur at the joints between reinforced concrete shear walls and blocks, between reinforced concrete beams and panels or blocks, at the openings of back-built doors, and at the joints between partition walls and existing walls.
Cracking at joints is primarily caused by the influence of the surrounding environment or external forces, leading to shrinkage variations in gypsum boards, prefabricated wall panels, and prefabricated floor panels, resulting in cracks at the joints.
To address these issues, repairs should be carried out after the overall structural deformation has stabilized, as temporary repairs are prone to recurring problems. Cracking on diatomaceous earth surfaces is primarily caused by inadequate sealing of joints and a lack of anti-crack measures to prevent joint formation on the wall.
3. Cracking of the putty layer leading to cracking of the diatomaceous mud.
If the wall surface putty layer develops cracks, it will directly lead to surface cracking. Therefore, it is important to take precautions to prevent putty layer cracking. Cracking in the putty layer is often due to insufficient bonding strength or the lack of measures to prevent cracking.
Cracks in diatomaceous earth decoration caused by these reasons cannot be repaired. Therefore, the quality of the putty layer is extremely important.
4. Cracking of the plaster layer leading to cracking of the diatomaceous earth.
Cracks in the plastered wall layer can be classified as normal or abnormal. Normal cracking primarily occurs due to shrinkage of the cement mortar, resulting in cracks in the plaster layer. Abnormal cracking is caused by improper construction techniques.
It is essential to properly prepare the substrate before applying the bio-based plaster. Otherwise, it will be impossible to repair. If the plaster layer has large voids, remove the existing plaster layer and apply a new layer of cement sand mortar. Then, level the surface and proceed with the normal procedure for applying the bio-based plaster.
5、Cracking on the diatomaceous earth surface.
The primary causes of this issue include substandard quality of diatomaceous mud products and improper application during the installation process. If the diatomaceous mud surface only exhibits cracking, the cracks can be removed with fine sandpaper, and the surface can be re-coated with diatomaceous mud of the same color.