The "Waterstop" profiles are made in high-quality polyvinyl chloride (plasticized PVC) and have excellent physical-mechanical properties, strength, flexibility, resistance to ageing and fluid-tightness even under pressure. The "Flat Waterstop" model art. WP is used for adjacent pours of concrete, while the "Waterstop with Bulb" model art. WB is used in concrete casting but as an expansion joint, thanks to the central bulb. They find many applications: floors, underground rooms, trench ducts/underground passages, face walls, cisterns, silos, swimming pools, tanks, canals, dams, aqueducts, etc. The quality of the materials allows the waterstops to be used on concrete structures exposed to temperatures between –30 °C and +70 °C, also ensuring good resistance to chemicals in alkaline environments, to brackish waters and to acid solutions.

LAYING INSTRUCTIONS
The Waterstops may be welded together to obtain a single piece of the required length. The two parts must be properly cleaned for perfect fluid-tightness of the joints. The waterstops are usually field welded using a normal hot-air heater on the ends of the sections. The bond is accomplished by melting the material and pressing one end over the other.