Durajoint® Waterstop is designed for use in concrete construction containing joints with one or more sides of the joint subject to hydrostatic pressure. Durajoint® Waterstop is used as a barrier within the joint to prevent the passage of liquid through or across the joint. It spans the joint equally and is embedded in the concrete on both sides of the joint to accommodate lateral and transverse movement which can cause the joint to open, close, or misalign. 

Types of Joints

Moving Joints – Large Amounts of movement occurs

Non Moving Joints – little or no movement occurs

Control Joints – Purposely created planes of weakness to predetermine the location of a crack during the curing and contraction of concrete. 

Types of Waterstops

Ribbed w/ Centerbulb (RCB) – Most common and versatile type of waterstop. Used in expansion, contraction, and construction joints where a large amount of movement is expected. The greater amount of expected movement, the larger the centerbulb should be. Ribbed profiles provide better watertight sealing than non-ribbed profiles. 

Dumbbell w/ Centerbulb (DBCB) – Selected application where movement will be present. The greater amount of expected movement, the larger the centerbulb should be.

Special Shape with Tear Web – Selected application where large movement will be present. When movement occurs, the tear web bulb will distort without causing stress on the material. 

Baseal® with Tear Web – For lateral, transverse and shear movement The greater amount of expected movement, the larger the web bulb should be.

Flat Ribbed – Joints where little or no movement is expected. 

Baseal® – For slab on grade installation at the bottom of concrete slabs to prevent upward seepage of groundwater through joints, or to waterproof joints at wall/slab junctions.

Dumbbell (DB) – Below-grade joints where little or no movement is anticipated.

Labyrinth – For vertical joints. A keyed joint is created and doesn’t require split bulkheads. They are difficult to use horizontally and have limitations with transitions and intersections.

Split Ribbed and Dumbbell – To eliminate split form work. The split flange is opened and attached to the bulkhead for placement of the first concrete element. The bulkhead is then stripped and the flange is closed and anchored for placement of the adjoining element. Suitable only for straight runs. Transitions and intersections are not applicable.