Overview
This method statement provides a systematic approach for waterproofing repair of basement swimming pool leakages. It covers leak detection, surface preparation, material application, and quality verification to ensure a watertight repair.
Leak Assessment
Before repair work begins, a thorough assessment of the leakage shall be conducted to identify the source, extent, and cause of the water infiltration. This may include visual inspection, moisture mapping, and hydrostatic testing.
Repair Procedures
- Drain the pool to below the leakage level
- Clean and prepare the repair area by removing loose material
- Grind or chip damaged concrete to sound substrate
- Inject active leaks with hydrophilic polyurethane resin
- Apply crystalline waterproofing coating to prepared surfaces
- Install cementitious waterproofing membrane
- Apply flexible waterproofing top coat
- Allow proper curing time between coats
- Conduct water tightness test after repair
Quality Assurance
All repair work shall be performed by trained and certified waterproofing applicators. Material application rates, curing times, and coverage shall be verified against manufacturer specifications. A 72-hour water tightness test shall be conducted before the pool is returned to service.
