A flexible sealing material installed in concrete joints to prevent water penetration through construction and expansion joints.

Water Stop is a flexible sealing material installed in concrete joints to prevent water penetration through construction and expansion joints by creating continuous waterproof barriers that accommodate structural movement while maintaining seal integrity. This essential waterproofing component consists of rubber, PVC, or other flexible materials formed into various profiles that are embedded in concrete during construction to seal joints against hydrostatic pressure and prevent water infiltration. Water stops are critical in concrete construction where they provide long-term joint sealing, accommodate structural movement, prevent water damage, and maintain structural integrity, making them indispensable for foundations, retaining walls, tunnels, and any concrete structure where joint waterproofing is necessary for building durability and water exclusion.

Water stops are utilized in various concrete construction applications and joint configurations including construction joints where they seal planned breaks in concrete placement, expansion joints where they accommodate thermal and structural movement while maintaining water seal, contraction joints where they prevent water infiltration through shrinkage cracks, foundation joints where they prevent groundwater infiltration in below-grade structures, retaining wall joints where they resist hydrostatic pressure from retained soil and water, and specialty applications including tunnels, dams, and water treatment facilities where critical water exclusion is required for structural integrity and operational functionality. Each application requires appropriate water stop selection, installation methods, and joint design based on expected movement and water pressure conditions.

The types and materials of water stops include rubber water stops made from EPDM, neoprene, or natural rubber that provide excellent flexibility and chemical resistance, PVC water stops that offer durability and ease of installation with good chemical compatibility, bentonite water stops that swell when exposed to water to create tight seals, hydrophilic water stops that expand in contact with water to fill voids and cracks, metal water stops including copper and stainless steel for specific applications, and specialty water stops including injectable, adhesive-backed, and custom-profiled systems for unique requirements. Material selection depends on joint movement, chemical exposure, and installation conditions.

Fun Fact: Water stops were first used in the early 1900s for dam construction, and modern hydrophilic water stops can expand up to 400% of their original size when exposed to water, creating extremely tight seals.

• Fire Stop
• Gravel Stop
• Hot Water Heater