Waterstops are made of elastomers of different characteristics. They are available in nitrile or flexible PVC (Vedaflex). Nitrile waterstops are characterised by a higher breaking elongation, excellent resistance to chemical agents as well as to ageing, and permanent elasticity that is comparable to that of rubber. Welded joints are very easy to produce. Flexible PVC waterstops are made from basic raw materials of high quality, but offer an economical solution.
There are two normal types of waterstop: internal waterstops (A range) that are laid inside the concrete elements, and external waterstops (AA range) on the surface or periphery of the structures (bottom of formwork). These two types are used to waterproof concrete construction joints that are subjected to pressurised water. The AA waterstop is used on the faces to the ground where it is much easier to be laid. Waterstops can be welded to each other on site using a hot knife, but this can also be done in the factory where the conditions are strictly controlled.
Nitrile elastomer or flexible PVC elastomer(Vedaflex).
Roll length of 25 m.
The waterstops are black and have different shapes to suit their intended application. Welding accessories (hatchet, hot knife, clamps) available on request.
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