We have redefined water stop with HydroBloc Rapid 570
For decades, the basic principle of injection technology has been that water ingress is stopped with foam.
However, this method has clear limitations. This is why we need to rethink how to stop water.
PU foams are often the first choice when dealing with heavy water ingress and water under pressure. They react quickly and stop the flow of water. As an emergency measure, this works extremely well in most cases.
The crucial question, however, is:
Is foam a permanently watertight solution?
Our experience shows that it is not. No.
There are two main reasons for this.
Firstly, foam remains foam.
Every piece of foam consists of countless cells, pores and voids. This is precisely its greatest weakness.
Wherever there are pores, there are potential pathways for water. Over time, moisture, water pressure and ageing processes can compromise the seal.
Therefore, foam always remains a porous material.
However, for a permanently reliable waterproofing solution, the opposite is required: a homogeneous, pore-free resin body.
No adaptation to movement.
A waterproofing system must be watertight not only today, but in the future too. It must also continue to function when the structure changes in five or ten years.
This is precisely where many foam-based waterproofing systems fall short. While they react quickly to stop water ingress, they cannot adapt to changing crack widths or joint movements. Even flexible foam fails in this respect.
HydroBloc Rapid 570 takes a different approach.
Its elastic resin body actively adapts to structural changes through adaptive sealing technology, even years after injection.
The result is a waterproofing system that stops water and remains permanently watertight.
This is why we at ARCAN rely on a new technology: water stopping without foam.
Watch the video to find out more: HydroBloc Rapid 570 – Water Stopping Redefined.
How does the subsequent adaptation work?
The elastic resin bodies can actively adapt to changing cross-sections. This is called adaptive sealing technology.
Foam only adapts once, during the reaction process. After that, its structure is fixed. If cracks or joints change later due to temperature fluctuations, settlement or structural movement, these changes cannot be compensated for.
Adaptive swelling resins work differently:
They remain permanently elastic and can react to moisture even years after injection. If a crack widens or a joint changes shape, the material actively adapts. The seal remains intact.
The result is that even when structures move, water has little chance of finding new pathways.
Foam may be inexpensive to buy, but expensive in practice.
When selecting an injection material, price is often the first thing considered. At first glance, foam resins often appear particularly economical.
However, the material price and the expected volume increase resulting from foaming say very little about the actual cost of waterproofing.
The decisive question is:
How much material is actually required, and how durable is the result?
Material loss through washout
In the presence of strong water flow, some of the injected material can be lost.
Low-viscosity foam resins are dispersed by the water flow and do not remain concentrated in one place. They are often diluted to such an extent that the sealing effect is delayed.
Consequently, material consumption increases.
HydroBloc Rapid 570 takes a different approach: HydroBloc Cream Technology.
Immediately after mixing, the unique Rapid Cream is formed. It is not water-miscible and is not dispersed by flowing water. The material remains exactly where the waterproofing is required.
The result is higher efficiency and faster sealing of the leak.
Permanent watertightness means greater economic efficiency.
This elastic, pore-free injection rubber seals faster and more efficiently than waterstop foam, making it significantly more economical.
When rework, complaints and recurring injections are avoided too, the solution becomes unbeatable.
Therefore, the decisive question should not be:
‘What is the material’s cost per kilogram?’
But rather:
‘What is the cost of waterproofing over the entire service life of the structure?’
The secret behind Rapid Cream technology is that
Immediately after mixing, Rapid Cream is formed. It can be pumped for around 60 seconds and reliably flows through cracks and joints.
At the same time, it is not water-miscible, and unlike many low-viscosity foam resins, it is not dispersed by flowing water. It remains locally concentrated.
Consequently, the material remains exactly where waterproofing is required, quickly and effectively sealing the water pathway.
After around 120 seconds, the reaction is complete.
The result is a homogeneous, pore-free, elastic injection rubber that:
- remains permanently watertight
- actively reacts to moisture
- compensates for structural movement
- contains no open foam cells
- provides reliable long-term waterproofing
Water stopping redefined: no foam, no pores, no compromise.
Why does Rapid 570 still seal years later?
The adaptive swelling effect means the material volume actively adjusts to changes in joint or crack cross-sections. HydroBloc Rapid 570 can increase its volume by up to 80%.
Important: Rapid 570 is not a gel.
When dry conditions occur, the additional swelling volume decreases again without the material shrinking below its original volume.
Unlike injection gels, HydroBloc Rapid 570 contains no water. The waterproofing remains permanently elastic and fully functional, even in dry conditions.