Effective Repair Solutions for Sanding, Peeling, and Dusting of Plaster Mortar Walls
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Sanding, peeling, and dusting of plaster mortar walls are common issues in decoration. These problems can lead to serious consequences:
Poor adhesion and detachment of waterproof coatings, resulting in waterproof failure;
Hollowing and bulging of putty layers, affecting aesthetics and indoor air quality;
Insufficient bonding, cracking, hollowing, or even falling off of wall tiles—especially exterior wall tiles, which may cause safety accidents endangering people's lives and property!
Traditional Repair Methods for Low-Strength or Sanding Walls
If wall sanding is caused by insufficient mortar strength, there are three conventional repair methods:
1.Remove and Rebuild: Scrap off the old mortar layer and apply a new screed layer. This method is time-consuming and costly, suitable only for severely damaged walls.
2.Surface Coating with Water-Based Adhesives: Use water-based primers or adhesives to treat the surface. While widely used for interior wall painting due to low cost, it only addresses symptoms rather than the root cause.
3.Cement Slurry Sealing: Apply neat cement slurry to seal surface sand and cover defects. Commonly used for project acceptance (to facilitate inspection) or as a base treatment before tiling sanding walls.
Warning: Putty, Tile Adhesive, or Waterproof Materials Alone Won’t Work!
For sanding, peeling, or dusting walls, even high-quality putty, tile adhesive, or waterproof materials cannot solve the core problem—insufficient mortar strength.
The Ultimate Solution: Sand Fixer (Zhi Sha Ling)
In recent years, a revolutionary repair method has emerged: Sand Fixer Wall Sand Repair Solution. It eliminates the need for wall scraping or surface-only treatments, directly addressing the root cause of sanding, peeling, and loosening caused by insufficient strength in new or old walls.
How It Works
Sand Fixer penetrates deep into the mortar (the more severe the sanding, the deeper the penetration) and undergoes a chemical reaction with cement compounds in the mortar. This reaction enhances the mortar’s strength, fundamentally resolving loose sand issues and providing alkali resistance.
Think of the sanding mortar as a semi-finished product—Sand Fixer acts as a curing agent, transforming it into a fully bonded, high-strength "finished product" through chemical bonding.
Notes for Use
Excessive dust or impurities on the wall surface may affect the curing effect. Clean the wall thoroughly before application.
For severely weathered mortar walls (long-term exposure to the elements), the molecular structure of cement compounds may be damaged, reducing the repair effect. We recommend conducting a small-scale test first.
Key Advantages
✅ No wall scraping or sanding required
✅ Saves time, labor, and costs
✅ Addresses the root cause (enhances mortar strength)
✅ Prevents recurrence of sanding and peeling
✅ Compatible with subsequent construction (puttying, painting, tiling)