Hydrophilic Concrete Joint Waterstop
This information reflects our best understanding of product composition in 2015, with the exception of the following components that have since had their composition updated: Kraft Paper (updated 2019), Release Coating (updated 2021).
Concrete joint waterstops can be metal, hydrophobic or hydrophilic. Hydrophilic waterstops are most common in joints with limited movement (concrete cold joints) and are thus explored in this CP. Within this group of waterstops, bentonite clay...
Concrete joint waterstops can be metal, hydrophobic or hydrophilic. Hydrophilic waterstops are most common in joints with limited movement (concrete cold joints) and are thus explored in this CP. Within this group of waterstops, bentonite clay based formulations are most common. The waterstop is used in vertical and horizontal non-moving concrete construction joints and around through penetrations to prevent water intrusion. The preformed strip watertop swells on contact with water, creating a seal in both hydrostatic and intermittent hydrostatic conditions. Some of these strips are self-adhering due to their tacky nature, but most technical data sheets still recommend the use of a primer or adhesive (at least on vertical surfaces). The material is delivered in a coil, with a paper backing on one side to prevent the strip from sticking to itself. The paper is removed upon application.