Encapsulation technique with Sika systems
Project Description
In this video, we show step-by-step our basement negative-side waterproofing work using an encapsulation technique with Sika systems, in a case where hydrostatic pressure from the subsoil was particularly high. At Rodríguez Ros, we have more than 50 years of experience in rehabilitation, restoration and waterproofing across Andalusia. This project perfectly reflects our approach: technical, rigorous, and using certified high-quality materials.
Work Phases
1. Preparation and Diagnosis
We performed a full inspection of the basement to identify active cracks, water leaks and critical areas where pressure from the surrounding soil compromised the structure’s watertightness.
2. Negative-side waterproofing with Sika systems
We applied an interior waterproofing system specifically designed to withstand negative hydrostatic pressure. We used Sika products that comply with standards for underground structures exposed to high water table levels.
3. Application of membranes and waterproof mortars
We completely sealed the surfaces using cementitious waterproof mortars and liquid polyurethane membranes (such as Sikalastic), reinforced with mesh and primers to ensure optimal adhesion and long-term durability.
4. Drainage and pressure control
We installed perimeter drains in strategic locations to divert accumulated water and reduce pressure on the walls, increasing the lifespan of the waterproofing system.
✅ Achieved Benefits
- Improved habitability and increased property value
- Completely dry and secure environment with no leaks
- Prevention of structural dampness
- Reliable protection against hydrostatic pressure even in extreme conditions
