Capillary tightening: an easy and economical DIY method to fix walls forever

Drill holes at the base of the wall (about 15 cm from the floor) in a horizontal line, spaced every 10–15 cm apart.
The holes should be approximately 10 mm in diameter and angled slightly downward to ensure proper sealant penetration.
4. Inject Waterproof Sealant
Use a water-repellent cream, silicone-based sealant, or liquid damp-proofing injection fluid.
Fill the drilled holes with the sealant using an injection pump or caulking gun. This creates a horizontal barrier that blocks moisture from rising.
5. Seal and Cover
After the sealant has set (refer to the product instructions), patch the holes with cement-based filler or waterproof mortar.
Replaster the wall with a waterproof render to create an additional moisture-resistant layer.
6. Paint with Moisture-Resistant Paint
Apply a moisture-resistant primer and paint to the walls for long-term protection. Use breathable paint if the walls need to release trapped moisture.
Preventive Tips for Long-Term Results:
Ensure proper drainage around your house to avoid water pooling near walls.
Install a vapor barrier in problem areas if needed.
Maintain gutters and downspouts to prevent water from soaking into walls.
Why This Works:
This DIY method addresses the root cause of capillary action by creating a physical or chemical barrier that blocks moisture. With proper application and maintenance, it can effectively protect walls for years.