WSS Megaswell 20x25mm Box (25m) Hydrophilic Bentonite Polymer Waterstop

WSS Megaswell - Hydrophilic Bentonite Polymer Waterstop

Megaswell is a Hydrophilic Bentonite Polymer Waterstop

• Megaswell 1020 must have at least 50 mm of concrete coverage and is designed for use with concrete pours between 150 mm and 200 mm thick
• Megaswell 2025 must have at least 75 mm of concrete coverage and is designed for concrete pours over 200 mm thick.

Product Features

• Swells up to 300% in contact with water to create a watertight seal
• Durable performance in a wide range of environmental conditions
• No flow at high temperature (80°C)
• No cracking at low temperature (-20°C)
• Resists up to 1.2 MPa hydrostatic pressure
• Flexible and easy to install in irregular joint profiles
• Compatible with concrete and various substrates

Applications

• Construction joints in concrete structures
• Basements and foundations
• Tunnels and underground structures
• Water tanks, swimming pools, and reservoirs
• Shafts, piles, and retaining walls

Installation Guidelines

Ensure substrate is clean, sound, and free from dust, oil, or laitance. Position the waterstop centrally in the joint and secure using Sealproof SMP Adhesive/Sealant, nails, or mesh as required. Ensure complete continuity at splices by overlapping or butting ends. Avoid exposure to water prior to concrete placement.

• Megaswell 1020 must have at least 50 mm of concrete coverage and is designed for use with concrete pours between 150 mm and 200 mm thick
• Megaswell 2025 must have at least 75 mm of concrete coverage and is designed for concrete pours over 200 mm thick.

Limitations

• This product is not designed for use under brick or blockwork
• Do not apply in standing water or when the product will be imminently exposed to rain
• Megaswell must be fully adhered to the concrete substrate prior to pouring concrete on it

Packing & Storage

• Megaswell 1020: 10 x 20 mm profile, 10 m/roll, 5 rolls per box (50 m total)
• Megaswell 2025: 20 x 25 mm profile, 5 m/roll, 5 rolls per box (25 m total)
• Colour: Black
• Store in a cool, dry place away from direct sunlight
• Protect from premature water exposure during storage and installation

Technical Information

• Volume Expansion: ≥ 300%
• Flow at High Temperature (80°C x 5h): No flow
• Low Temperature Test (-20°C x 5h): No crack
• Shear Strength: 1.2 MPa
• Hydrostatic Pressure Resistance: 1.2 MPa
• Test Method: GB/T 18173.3-2014 Section 6.3.4 & Annex B
• Test Conditions: 23±5°C distilled water, 120h; Lab: 23±2°C, 50±5% RH

Compliance

Tested in accordance with GB/T 18173.3-2014 performance standards.