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    Waterproofing Accessories

    Hydrojoint Tape

    Hydrojoint Tape

    Elastic Thermoplastic Tape for Joints

    HYDROJOINT TAPE is a thermoplastic, elastic tape engineered for the treatment of expansion and construction joints and reinforcement of angles in water tanks, seamlessly integrating with waterproofing systems. Highly flexible and long-lasting, it offers superior resistance to chemical attack, especially in alkali environments, and can be applied to both dry and damp concrete surfaces. HYDROJOINT TAPE withstands extreme weathering, prevents deterioration over time, and maintains excellent flexibility for complex substrate conditions. Easy to install on both horizontal and vertical joints, it provides durable, chemical-resistant protection in even the most demanding environments.

    Technical data:
    • Thickness : 1mm
    • Weight : 930 g/m²
    • Generic type : TPE
    • Application Temperature : 5°C to 45°C
    • Temperature Resistance : -20°C to 90°C
    • Packaging : Width: 150, 200, 250, 300 mm, Length: 20 lm roll
    • Shelf life : 24 months

    How to Apply Hydrojoint Tape

    Hydrojoint Tape is bedded into an adhesive layer of the liquid applied membrane used on the project, as part of a waterproofing system.

    1. Prepare the joint area. Surfaces must be sound, clean, dry and free from loose material, efflorescence, laitance, curing compounds, dirt, oil and grease. Clean the installation area with a wire brush and blow with clean air; concrete must be fully cured so no shrinkage occurs after the tape is installed.
    2. Select the tape size. Choose the Hydrojoint Tape width to suit the substrate condition and the waterproofing system used.
    3. Apply the adhesive layer. Apply an adhesive strip of the liquid applied membrane along both sides of the joint and over the angle of the waterproofed substrate. The adhesive thickness should always be more than 1.00 mm.
    4. Lay and embed the tape. Lay the non-woven sides of the tape gently onto the coated surface and embed the edges with a trowel or plastic roller, applying pressure so there are no wrinkles, air bubbles, voids or folds. For movement joints, the tape can be installed flush or in a U shape to suit the joint design.
    5. Join tape lengths. Overlap and bond joins by at least 50 mm by hot or cold welding, after roughening the weld area with sanding paper. Determine the welding temperature on a sample tape first; pre-cut corner profiles are available for continuous detailing.

    Summary of the method in the Hydrojoint Tape Technical Data Sheet. Always follow the full TDS on site.

    Standards & Test Methods

    StandardTitleReferenced for
    ISO 868Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore hardness)Listed in the TDS

    Standards and test methods as referenced in the Hydrojoint Tape Technical Data Sheet. Values in the TDS are typical laboratory results under standard conditions.

    Frequently Asked Questions

    What is Hydrojoint Tape used for?

    Hydrojoint Tape treats expansion and construction joints and reinforces angles in water tanks, as part of a waterproofing system. Uses include joints in channels, basins, wet areas, swimming pools and water pipes, and between substrates with different expansion or rigidity.

    What temperatures can Hydrojoint Tape withstand?

    Application temperature is 5°C to 45°C and temperature resistance is -20°C to 90°C.

    Can Hydrojoint Tape be applied to damp concrete?

    Yes. The TDS states it is suitable for application on dry and damp concrete, and on both horizontal and vertical joints.

    How are Hydrojoint Tape lengths joined?

    Overlap and bond the tapes by at least 50 mm using hot or cold welding, after roughening the area with sanding paper. Test the welding temperature on a sample first.

    What sizes does Hydrojoint Tape come in and what is its shelf life?

    It is available in 150, 200, 250 and 300 mm widths in 20 linear meter rolls. It can be used within 24 months of production if stored unopened in dry conditions away from direct sunlight.

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