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Formwork Waterproofing System

Updated: 9 December 2025

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Technology continues to transform construction processes, making work faster, safer and more reliable. Two innovative systems used in modern formwork — RivePipe and RiveStop — offer significant advantages for creating clean voids and sealing tie holes permanently.

These products work together to improve waterproofing, reduce site damage and ensure long lasting structural performance.

Table of Contents

What Is RivePipe?

The RivePipe Formwork Tube is an innovative system designed to protect tie bars inside formwork and create clean, uniform voids within concrete walls. After the concrete sets, the tube can be extracted quickly using RiveOut, leaving a smooth, circular, empty hole ready for sealing.

RivePipe is suitable for any wall thickness and can be reused multiple times, making it an efficient and economical choice for contractors.

Benefits of the RivePipe System

  • Easy to use: Install before pouring concrete and extract with RiveOut after curing.

  • Adaptable: Suitable for any wall thickness.

  • Reusable: Can be cleaned and reused across multiple projects.

  • Clean extraction: Produces smooth, damage free holes.

  • Safer alternative: Eliminates the risks associated with PVC tubes left inside concrete structures.

  • Fast removal: RiveOut can extract the tube in about five seconds.

What Is RiveStop?

RiveStop is a patented elastic rivet designed to seal formwork holes permanently and hermetically. Once installed using a manual or electric riveter, it expands inside the void by around 50 percent, pressing firmly against the concrete to form a watertight seal.

RiveStop offers a modern alternative to traditional waterproof membranes, providing a faster, cleaner and more reliable solution without additional additives or special finishing.

Advantages of RiveStop

  • Weatherproof and suitable for installation in all conditions.

  • Extremely durable and certified for lifetime sealing.

  • Guaranteed permanent waterproofing of formwork holes.

  • Fast installation, taking only three to five seconds per hole.

  • Does not stain concrete or leave residue on the surface.

  • Allows for simple on site monitoring of installation progress.

  • Designed so installers cannot make mistakes.

  • No further finishing required unless specified by the engineer.

As construction practices evolve, systems like RivePipe and RiveStop support greater sustainability and efficiency by reducing waste, improving waterproofing outcomes and streamlining formwork workflows.

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