Large-scale sewage treatment plants are critical infrastructure in urban West Africa. With rising populations and urban expansion, effective sewage treatment ensures public health and environmental safety. In Ghana, one such facility faced severe water leakage and chemical attack in its concrete tanks and channels, threatening operational continuity.
Constant exposure to wastewater and aggressive chemicals.
Concrete deterioration leading to leakage.
Need for a waterproofing system that could withstand continuous immersion.
Project had to be executed while parts of the plant remained operational.
Prepcoat deployed its Waterproofing Solutions designed for civil and engineering projects. The chosen solution included:
Cementitious waterproofing coating with chemical resistance.
Expansion joint sealants to prevent seepage.
Protective top layer to resist abrasion from sewage flow.
Surface Preparation – Cleaning, crack injection, and patch repair of degraded concrete.
Coating Application – Multi-layer cementitious waterproofing applied by spray.
Joint Sealing – Polyurethane sealant applied to joints and corners.
Final Protection – Top coat applied for added chemical resistance.
Zero leakage recorded after project completion.
Extended tank lifespan by more than 20 years.
Compliance with international environmental safety standards.
Reduced operating costs due to fewer repairs and downtime.
Waterproofing in sewage facilities must combine chemical resistance with structural durability.
Preventive waterproofing is more economical than reactive repairs.
