ISRA WB-20
ISRA WEB BLOCK.20
ISRA WATER BLOCK (WB)
Mix developed for casting elements in contact with water.

Usage Instructions
- Can be applied by direct pouring, crane, or pump (standard/micro/static).
- Mix tailored to the specifications, designer, and waterproofing consultant requirements
- Requires strict adherence to spacing between formwork and reinforcement to ensure uniform flow
- Casting mold must be properly sealed to prevent leakage
- Reinforcement ties must be secured professionally to avoid potential water ingress points
Advantages
- Suitable for water reservoirs, wastewater treatment facilities, underground elements, and roofs
- Ensures adhesion and protection of reinforcement steel
- Provides water penetration resistance of up to 20 mm (average)
- Enhanced sealing properties
- Designed as the top layer in mass concrete pours
- Capable of self-healing in the event of cracking
- Contains a quick-setting additive for surface finishing
- Includes fibers to control cracking in the top layer of the pour

- Supplied as a base in exposure class 2–4 (per IS 118).
- Delivered as an additive to the base mix
