Controlled Expansion Waterstop
Penebar SW-55 is a hydrophillic waterstop that will expand in a controlled fashion when exposed to water. It is a sophisticated water-sealing product that encapsulates hydrophilic materials into a rubber base to create a built in delay system.
What is controlled expansion?
Controlled expansion allows Penebar SW-55 to avoid some of the problems that have been associated with traditional water-stops on many building sites:
- It does not expand prematurely and does not absorb any water from fresh concrete poured against it.
- It will not expand to a point where the hydration process causes it to disintegrate and hence will not be washed away when subjected to a constant water flow.
- It will not cause excessive internal pressure in the concrete.