Hydrophilic, Expandable, Pre-Formed, Flexible Rubber Strip for Watertight Construction Idrostop is is used to produce watertight construction joints in civil, industrial and hydraulic construction. Construction joints created with Idrostop are watertight up to 5 atm of pressure. Unlike materials made of alternate composition that lose efficiency in repeated wet/dry cycling, Idrostop’s unique composition allows it to maintain performance even in aggressive environments.

• Idrostop’s pre-formed flexible strip features an acrylic polymer base specially designed to form watertight construction joints up to a hydraulic pressure of 5 atm
• Bentonite-free
• Expands gradually in permanent contact with water, creating an active barrier against positive and negative water pressure
• Maintains its properties even in the presence of aggressive water such as saltwater (seawater), and water in sewage treatment plants and sewers
• Stable at temperatures between -22°F and 122°F (-30°C and 50°C)