Description
Waterproofing Construction Joints with Reliable Sealing
Mapei Idrostop is a hydrophilic, expanding rubber profile designed for creating watertight construction joints in civil, industrial, and hydraulic projects. Once in contact with water, it swells to form a secure, long-lasting waterproof barrier.
Where to Use
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Construction joints in concrete beds and elevation walls
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PVC or steel pipe penetrations in swimming pools, tanks, and reservoirs
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Areas with dense reinforcing, where traditional waterstops are difficult to install
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Hydraulic structures including tunnels, dams, sewage plants, and potable water reservoirs
Key Benefits
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Expands on water contact for maximum sealing
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Easy to install with Idrostop Mastic, nails, or screws
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Suitable for potable water applications
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Resistant to long-term exposure in hydraulic projects
Sizes Available
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Idrostop 10 (20x10 mm) – six 10 m rolls per box
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Idrostop 15 (20x15 mm) – six 7 m rolls per box
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Idrostop 25 (20x25 mm) – six 5 m rolls per box
Technical Data
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Shape: Pre-formed tape
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Joint width: max 7 mm
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Application temperature: +10°C to +40°C
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Storage: 12 months
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