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HydroTank XTCB and HydroTank XTRS are traditional, cast in-situ PVC WaterStops, designed to provide a watertight seal to prevent water passing through construction and movement joints of concrete structures. HydroTank XTCB is installed to the centre of the concrete section of the joint and HydroTank XTRS is applied to the external face of the joint.

The waterstops and their ancillaries are extruded from a high-performance PVC formula which has excellent flexibility and longevity. The multi-rib profile provides a torturous path to prevent the passage of water through joints when concrete is correctly placed and compacted.

HydroTank XTCB

The XTCB profile is specifically developed to be placed centrally within concrete wall and floor joints, and includes an eyelet edge flange which enables wiring and positioning to the surrounding reinforcement. Placed centrally within the joint, the XTCB is able to withstand water pressure from either side, making them suitable for both water retaining and water resting structures. The XTCB also has a central bulb to accommodate the movement in expansion joints and the support of the joint filler board.

HydroTank XTRS

The XTRS profile is specifically developed to seal joints in concrete at the external surface which protects the reinforcing steel against corrosion attack and provides a totally watertight seal. The central bulb allows movement to be accommodated in expansion joints and also provides an area to support expansion joint filler boards. The XTRS incorporates a nailing flanged edge to ensure a secure fixing that resists tearing.

When used in walls, externally placed waterstops will only resist water pressure from the face to which they are fixed. When used below floor slabs, where the waterstop is supported by the building concrete or when placed in vertical situations against permanent concrete shuttering, externally placed waterstops will resist water pressure from either face.

  • Key Benefits
  • Typical Applications
  • Suitable Substrate
  • Technical Data
  • Key Benefits

    Key Benefits

    • Immediate protection against water pressure – does not need to swell to be effective as is the case with hydrophilic waterbars
    • Extremely high bond between the ribbed profile of the water stop and the surrounding concrete, ensuring a torturous path for the water trying to pass through the joint
    • No kicker or rebate required, reducing site labour costs
    • Preformed ancillaries for quick site installation
    • More durable than conventional waterbars – cannot be damaged or moved by the placing or compacting of concrete
    • Can be installed in any weather and at any temperature
    • Continuous multi-rib control profiles
    • Eyelet edges for positive fixing (XTCB)
    • Nailing flange for easy fixing (XTRS)
    • Range of profiles
    • Simple jointing on site
    • Range of standard junction pieces
    • Special fabrications available (made to order)

    Typical Applications

    Typical Applications

    • Reservoirs, water towers and sewage tanks
    • Dams, culverts, canals and spillways
    • Swimming pools
    • Bundled areas surrounding liquid retaining tanks
    • Basements and underground car parks
    • Tunnels and subways
    • Abutments and retaining walls
    • Roof decks and podium areas

    Suitable Substrate

    Suitable Substrate

    • Concrete

    Technical Data

    Technical Data

    Features XTRS XTCB Units Test Method
    Relative Density – S.G. 1.43 1500 g/c/Kg/m³ BS2782 620A / EN ISO
    1183-1 Method A
    Softness – Shore A Hardness 75- 80 78 – 82 EN ISO 868
    Tensile Strength 12 12 MN/m² BS2782 320A / EN ISO
    527 – 2
    Extension at Break 270 240 % BS2782 320A / EN ISO
    527 – 2
    Cold Flex Temperature – 24 N/A °C BS2782 150B

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      We will be closing between Christmas and New Year, with the last day of operations being Friday 20th December. Last orders for delivery before Christmas therefore need to be placed by 2pm on Thursday 19th December, with final deliveries on Friday 20th December. After this, no deliveries will be possible until January 2025. The Newton branches in Tonbridge and Leeds will reopen in the New Year on Thursday 2nd January 2025.