Wekano PVC Water Stop

Ribbed PVC water bar for construction and expansion joints

A high-performance water barrier of flexible PVC, cast into concrete joints of water-retaining structures to cut off the water path through construction and expansion joints.

Material: Flexible PVC
Widths: 200 / 250 mm
Roll length: 15 m
Joint type: Construction & expansion

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Overview

The Wekano water stop is a high-performance water barrier made of high-quality flexible PVC. It is engineered to be cast into concrete joints in water-retaining structures, acting as an impermeable dam that cuts the water path through construction joints and expansion joints.

Multiple ribs ensure full bond with the concrete and lengthen the water path, making leakage virtually impossible. The strip also resists chemicals found in sewage and soil — an essential element for swimming pools, water tanks and basements.

Technical Specifications

Property	Value
Base material	High-quality, flexible polyvinyl chloride (PVC)
Strip width	Multiple sizes (e.g. 200 mm, 250 mm) per structural design
Roll length	15 linear metres (standard roll)
Joint type	Construction joints and expansion joints
Chemical resistance	Chlorine, seawater, mild acids and sewage
Tensile strength and elongation	Very high — withstands building movement and concrete pressure without tearing

Key Features

Prevents water passage in both directions
Multiple ribs for full bond with concrete
Resistant to chlorine, seawater and sewage
Heat-weldable joints for continuous protection

Applications

Kicker joint between base slab and wall
Construction joints in floor slabs
Horizontal and vertical wall joints
Joints between walls and roof slabs
Swimming pools, water tanks, sewage works and basements

Application Guide

01

Positioning and fixing

Fix the strip exactly in the middle of the wall or slab thickness using clips or tie wire to the reinforcement to prevent movement during pouring.
02

First pour

Pour concrete to fully embed half of the strip width. Vibrate carefully to avoid honeycombing around the strip.
03

Second pour

After the first pour has set, pour the remaining concrete to embed the other half, creating a continuous water barrier.
04

Welding and joints

Where a new length is needed, heat-weld the ends with a heating blade to keep the barrier continuous.