PVC WaterStop is extruded from an elastomeric polyvinyl chloride rubber. PVC WaterStop are designed in precision engineered profiles to stop any possible leakage from construction, contraction and expansion joints in cast-in place concrete elements. PVC WaterStop are produced in two profile ranges; one used for internal fixing and the other for external fixing. Both profiles can used in combination as an integrated system suitable for use in water retaining and water excluding structures. Internal fixing profiles have brass eyelets at 300 mm spacing enabling the water stop to be tied to the reinforcement for support during concreting. External fixing profiles can be fixed by using nails onto the form work or onto the blinding concrete.