Case Study: Retaining Wall Waterproofing Using Torch-On Waterproofing

Location: Charity Rehabilitation Facility
Project: Waterproofing of Retaining Wall and Rising Damp Prevention

Overview:

 

A charity rehabilitation facility specializing in post-stroke and cardiac patient recovery was experiencing severe moisture-related issues. The primary concerns were:

 

  1. Rising Damp: Moisture was seeping up the walls, affecting the building’s integrity.
  2. Retaining Wall Water Penetration: The retaining wall was absorbing water and allowing moisture to pass through to the other side, leading to structural vulnerabilities.

Problem Diagnosis:

 

Upon inspection, the following key issues were identified:

  • Insufficient or failed waterproofing at the foundation level.
  • Water infiltration through the retaining wall, leading to damp patches and potential mold growth.
  • Rising damp due to capillary action, pulling moisture upwards through the walls.

These problems not only compromised the structure but also posed a health risk to the vulnerable individuals receiving care at the facility.

Solution Implementation:

 

To effectively address these issues, a torch-on waterproofing system was selected due to its durability and effectiveness. The process involved:

 

  1. Excavation: The soil was carefully removed down to the foundation level to expose the affected area.
  2. Bitumen Primer Application: A high-quality bitumen-based primer was applied to prepare the surface and enhance adhesion.
  1. Torch-On Waterproofing Installation: A robust, heat-applied waterproofing membrane was installed along the retaining wall and foundation to create an impenetrable moisture barrier.
  2. Protective Stone Layer: A layer of protective stone was placed over the waterproofing to shield it from external damage and soil pressure.
  3. Backfilling: The excavated soil was replaced, ensuring proper drainage to prevent future water buildup.

Outcome:

  • Complete Waterproofing Success: The rising damp issue was fully mitigated, preventing moisture from seeping into the structure.
  • Retaining Wall Protection: The waterproofing system effectively stopped water from passing through the wall, eliminating moisture penetration.
  • Long-Term Guarantee: The system installed provides a 10-year waterproofing guarantee, ensuring the facility remains protected from water damage for years to come.