enDuratite E-Series Waterstop is a PVC waterstop created to provide architects, civil engineers, and building contractors with a modern adaptation of a tried and true method. E-series Waterstop prevents the seepage of water through floor-to-wall joints, expansion joints, and construction joints either vertically or horizontally. Having great flexibility, they are especially recommended for joints where movement is expected. Strict quality control is observed at all stages of manufacturing and no salvaged material is at any time used in the manufacture of enDuratite E-Series Waterstop.