Sika Waterbar® V-25 VN (20m)/Roll
Product Category: Construction Chemicals / Waterproofing System Brand: Sika Model Code: Sika Waterbar® V VN
Description Sika Waterbar® V VN is a flexible PVC waterbar manufactured from thermoplastic polyvinyl chloride (PVC). It is designed to prevent water migration through construction joints and movement joints in concrete structures.
The multi-rib profile forms an effective waterproof barrier once concrete has hardened, ensuring long-term sealing performance in water-retaining and underground structures. The waterbar can be easily welded on site using a welding knife, allowing secure joint continuity during installation.
Specifications
Material: Polyvinyl Chloride (PVC)
Colour: Yellow
Type: Flexible Strip Waterbar
Shore A Hardness: >70
Tensile Strength: 12 N/mm² (±5%)
Elongation: 300% (±5%)
Service Temperature: −35°C to +55°C
Chemical Resistance:
Permanent: Seawater, sewage
Temporary: Diluted alkalis, mineral acids, oils and fuels
Shelf Life: 5 years (proper storage)
Storage Condition: Dry, shaded area protected from sunlight
Available Sizes & Packaging
Type | Width | Roll Length | Nominal Thickness |
V-15 | 150 mm | 20 m | 3.0 – 5.0 mm |
V-20 | 200 mm | 20 m | 3.0 – 5.0 mm |
V-25 | 250 mm | 20 m | 3.0 – 5.0 mm |
V-32 | 320 mm | 15 m | 3.0 – 8.0 mm |
Applications
Water reservoirs
Sewage treatment plants
Swimming pools
Basements
Retaining walls
Lift shafts
Tunnels and culverts
Service pits
Concrete construction and movement joints
Features
Flexible PVC construction
Sealing begins once concrete hardens
Multi-rib profile prevents water penetration
Excellent chemical resistance
Easy site welding for continuous sealing
Multiple profiles available for different applications
Long service life waterproofing solution
Application Method
Fixing to Formwork
Install centrally within split formwork or shuttering.
Suitable for construction and movement joints with expected movement.
Fixing to Reinforcement
Pre-punched eyelets allow easy fixing to reinforcement using tie wire.
Ensures waterbar remains correctly positioned during concreting.
Concrete Placement
Both sides must be fully embedded in concrete.
Carefully vibrate concrete to avoid honeycombing.
Maintain equal concrete pressure on both sides to prevent displacement.
