Waterstop is a flexible strip made of PVC or UPVC, used within construction joints during concrete pouring to prevent water leakage. It is an essential element in protecting the infrastructure of structures exposed to moisture or hydrostatic pressure.
📐 Technical Specifications
- Material: High-quality PVC or UPVC
- Standard Width: 20–30 cm
- Length: Typically 30 m per roll
- Types:
- Internal Waterstop (installed inside the joint during pouring)
- External Waterstop (installed on the joint surface before pouring)
- Expansion Waterstop (for expansion joints, with high flexibility)
- Flexibility: High, to resist water pressure and shrinkage
- Resistance: Against water, chemicals, and moisture
🛠️ Common Applications
- Underground and overhead water tanks
- Tunnels and retaining walls
- Water and wastewater treatment plants
- Deep foundations and cold joints
- Expansion and contraction joints in concrete
✅ Advantages of Waterstop
- Effectively prevents water leakage
- Protects reinforcement steel from corrosion
- Extends the lifespan of the structure
- Withstands high water pressure
- Easy to install within construction joints
⚠️ Important Notes
- The appropriate type must be selected according to the joint type (expansion – construction – cold).
- Recommended for all structures exposed to water.
- Preferably installed by specialized technicians to ensure complete sealing.
📖 See also: Polyethylene Sheet
