PVC Waterstop

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PVC Waterstop System


PVC Waterstops lead the way in high technology water stops and comply with international standards.

PVC Water stoppers are extruded from specially compounded PVC  according to BS2782, and they are designed for use in water retaining and water excluding structures where a positive seal is required for poured in-situ concrete expansion construction and contraction joints.

PVC Water stoppers are designed to use in many types of applications and structures for your convenience, and these are available in different size profiles to suit a project’s requirements. 

PVC Water stoppers are available in rolls with separate intersections supplied to simplify and minimize on-site fabrication. The water stopper is heat weldable, and it allows for fast and easy on-site welding/joining.

The efficiency of any water stop is very dependent on good quality, installation, and full compaction of the surrounding concrete around the water stopper during its concrete placement. Optimum performance will be achieved if the water stopper is installed by keeping these important factors in mind.


PVC water stopper is a polyvinyl chloride resin that undergoes a series of complex processes such as mixing, granulation, and extrusion. The main feature of PVC water stopper is that it contains certain water-expandable compounds. When exposed to water, the hydro-expandable compound in the waterstop expands rapidly. When combined with concrete, it can prevent water from flowing effectively into the structure.

When to use PVC water stop, that’s a good question. Some countries don’t use PVC water stops for a construction water stop, and they use PVC strips. The problem with using PVC strips is in the installation process. Yes, the bond with concrete is slow. The advantages of using PVC water stop are: 

  • Environmental profile 
  • Make sure the construction is still working 
  • Easy to install Expansion fitting connections can be transformed into construction fittings 
  • The Center bulge and flat top allow the infill panel to fit snugly


  • A full range of profiles and sizes to suit all types of construction requirements
  • PVC Waterstops conform to and exceed all major international standards
  • High quality compounded PVC for long term durability and integrity
  • Factory-made intersections to simplify and minimize on-site fabrication
  • On-site welding equipment is available upon request
  • Internal profiles come with factory pre-punched eyelets for easy and secure wire tying to reinforcement
  • Ability to withstand high hydrostatic head pressures

Areas of Application

Water retaining structures:

  • Water tanks
  • Water treatment plants
  • Sewage treatment plants
  • Swimming pools
  • Dams and spillways
  • Reservoirs
  • Bund walls

Water excluding structures:

  • Basements
  • Underground car parks
  • Tunnels
  • Retaining walls
  • Suspended slabs
  • Below ground slabs
  • Roof & podium slabs

Note: The products design and performance, its intended use, installation, and final confirmation and approval for use,

must be provided by the project’s Design Engineer and Project Manager.


Technical Features

Colour: Orange

Packaging: 150mm – 20m = 20m roll, 250mm = 15m roll, 320mm = 12m roll

Roll Weight: Dependent upon profile type

Storage Conditions & Shelf Life: 5 years from the date of production if stored properly in original, unopened, and undamaged sealed packaging, in dry conditions out of direct sunlight at temperatures between +10°C and +40°C

Material Type: Polyvinyl Chloride (PVC)

Welding Temperatures: Approximately 190°C – 200°C

Service Temperature Range: -25°C to +70°C

Storage Tips

Store PVC joint tape and water stoppers in a shaded and dry place

Keep away from frost, water, humidity and hot places

Coil them up for easy transportation


It has a higher tensile strength

High resistance to seawater, acids, and even diesel oils

It never discolours your concrete

Strong elongation capabilities

It has Greater elasticity properties to hold your leaks

Expect high-quality PVC with its excellent industrial standards

Less likely to get tired like metal or rubber

There is no electrolytic effect with its surrounding metals

It can be heat sealed in combination with an electric splicing iron

It is very easy to install

Can accommodate deflections or displacements caused by temperature changes or foundation subsidence differences


Profile Width Selection

The width of the water stopper depends upon the thickness of the concrete and the positioning of the reinforcement. The thickness of its concrete should be greater than or equal to the width of the PVC water stopper profile. Refer to your engineer for further clarification and approval.


Site Joining

We recommend the use of its specialized welding equipment for on-site welding, which consists of thermostatically-controlled Welding Irons and special Welding Jigs (each type of PVC Waterstop requires its welding jig to suit the particular shape). On-site joining is a simple exercise using Heat Welding Equipment comprising of an adjustable Welding Jig and Welding Iron. The ends of the water stopper are cut square and placed into the adjustable Welding Jig, then push the ends of the water stopper against the Welding Iron. Bring the two ends together while the molten ends of its PVC fuse. When ordering Welding Equipment, please advise the profile number of the water stopper required for future usage.


Factory Made Intersection

A wide range of standardized prefabricated intersection elements are available, allowing easy site welding of butt joints to PVC Water Stopper junction pieces. Customized pieces can be made to suit. In such cases, drawings must be provided, giving exact dimensions and jointing details.


Written Specification

Where shown on the drawings, water stoppers shall be Waterstop (state profile number required) as supplied. Provide factory-made water stopper fabrications for all changes in the direction, intersections, and transitions, leaving only straight butt joined splices for on-site fabrication.


Health And Safety Information

Joining of PVC Waterstops is performed by heat welding, which results in the discharge of hydrogen chloride mist and vapour. In confined spaces or in still air conditions, using a ventilation fan or a suitable respirator should be used, since the advice and approval of the Site Safety Supervisor are essential. For further and admirable information or advice on health and safety precautions, safe handling, proper storage, and correct disposal of products, please refer to the most recent product Safety Data Sheet (SDS), which is available upon request. Grab one of the best PVC Water Stopper in Singapore!

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