Dual Seal waterstop
Hydrophilic Self Swelling Waterstop
Key Features
- Bentonite based
- Durable in use
- May be used in marine environments
- Water tight to 35 metres depth
- Easy to fix
- Effective barrier to transmission of water
- BBA Certified 97/3328
What is Dual Seal waterstop?
DUAL SEAL WATERSTOP is a bentonite based waterstop or bar which reacts on contact with water by swelling to form a watertight seal in concrete structures. The product must be fully confined within the concrete structure to form an effective seal. It is primarily used to waterproof construction joints and penetrations in underground reinforced concrete structures. The product is not suitable for use in expansion or movement joints.
Technical Data
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Physical properties
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Value
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Test Method
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Dimensions
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7mm x 25mm x 8,000mm
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Tensile strength
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44.8N/mm2
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ASTM D146
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% Elongation – ultimate failure
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600%
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ASTM D638
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Water penetration at joint
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0%
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Operating temperatures
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-430C to +1320c
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Cycling over 38mm joints
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No deterioration 2,000 cycles
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