Whereas conventional PVC waterstops are relatively inexpensive to purchase, they are labour intensive to install and frequently fail to adequately waterproof poured construction joints. Due to folding and improper splicing, PVC waterstops are not as tolerant of typical concrete construction practices and cannot accommodate for concrete shrinkage without leaking. A large portion of MULTIURETHANES’ business involves the subsequent repair by injection of failed PVC waterstops.
Hydrotite waterstops, by comparison, are “active” materials and have the capacity to expand by absorbing water into their hydrophilic matrix. This expansion capability compensates for movement and shrinkage, which typically occur in concrete structures and allow Hydrotite to maintain a water-tight joint. In addition, Hydrotite can simply and quickly be installed.