High-Elasticity Single-Layer Waterproofing System | The Safest Solution for Foundations and Retaining Walls

28/07/2026

High-Elasticity Single-Layer Waterproofing System | The Safest Solution for Foundations and Retaining Walls

Flexobit Next-Generation Waterproofing Solution: Reinforcement-Free Elastic Membrane Technology

In modern construction projects, particularly for foundations and retaining walls, single-layer, reinforcement-free, and filler-free elastic membranes have become the preferred solution for reliable waterproofing performance. Manufactured with a homogeneous thickness of 5 mm, these membranes can elongate up to 1600%, allowing them to move together with the concrete substrate while maintaining their integrity even when cracks occur.

Thanks to their self-healing properties, minor punctures and small-scale damage can naturally close over time, providing long-lasting and dependable waterproofing protection.


Foundation Slab Application: Fast, Safe, and Single-Layer Installation

After the lean concrete (blinding concrete) has been mechanically finished and the surface is completely dry, the membrane is installed using the loose-laid application method.

Installation Details

  • Longitudinal overlaps: 10 cm
  • Transverse overlaps: 15 cm
  • Heat is applied only at overlap joints without burning the bitumen
  • Single-layer installation reduces both labor time and project costs

This application method provides a practical and efficient waterproofing solution while maintaining excellent flexibility and performance.


Retaining Wall Application: Maximum Protection Through Full Bonding

Once the concrete surface has been properly cleaned and prepared, a specialized bituminous primer is applied to enhance adhesion.

The membrane is then installed using the fully bonded application method.

Benefits of Full Bonding

  • Increased resistance to groundwater and hydrostatic pressure
  • Elimination of voids beneath the membrane
  • Prevention of water migration behind the waterproofing layer
  • Extended service life of the structure

This approach ensures continuous waterproofing protection across the entire retaining wall surface.


Advantages of This Technology

One Material for All Details

Using a single membrane system for both horizontal and vertical applications eliminates weak points at transitions and connection details.

No Layer Variations

The homogeneous membrane structure minimizes installation errors and provides consistent performance throughout the waterproofing system.

Excellent Low-Temperature Flexibility

The membrane maintains its flexibility at temperatures as low as –25°C, helping prevent cracking and loss of waterproofing performance.

Moisture-Resistant Installation Process

The system is less affected by ambient moisture conditions, reducing delays and helping improve project efficiency.


Conclusion

High-elasticity, reinforcement-free waterproofing membranes represent a modern approach to foundation and retaining wall waterproofing. Their ability to stretch up to 1600%, self-heal minor damage, and maintain flexibility under demanding conditions makes them an ideal solution for long-term structural protection.

By combining single-layer installation, superior waterproofing performance, and exceptional durability, these advanced membrane systems help create safer structures, faster construction processes, and longer-lasting investments.

Key Benefits at a Glance

✔ Single-layer waterproofing solution
✔ Up to 1600% elongation capability
✔ Self-healing membrane technology
✔ Maintains flexibility down to –25°C
✔ Strong resistance to groundwater pressure
✔ Faster installation and reduced labor costs
✔ Long-term durability and structural protection
✔ Suitable for both foundation slabs and retaining wall applications