De Neef Sweallseal®

SWELLSEAL® hydrophilic waterstops expand upon contact with water to fill a void or joint and create a compression seal waterstop. Unlike traditional molded waterstops that are a fixed sized and must be placed in fresh concrete, SWELLSEAL® hydrophilic waterstops can be placed in any joint or interface. Old to new concrete, concrete to steel joints, between precast concrete members, or even steel to steel interfaces are no problem for SWELLSEAL® hydrophilic waterstops. Available in extruded rubber shapes or as a gun grade paste, SWELLSEAL® hydrophilic waterstops offer effective solutions for difficult surface to surface sealing applications.


Scope of SWELLSEAL® Applications:
  • Waterproofing cold joints
  • Waterproofing construction joints
  • Waterproofing joints between precast elements
  • Sealing pipe penetrations
  • Sealing encased steel H-beam penetrations
  • Sealing steel to steel and steel to concrete joints
Typical SWELLSEAL® Applications:
  • Wastewater treatment plants
  • Water tanks
  • Water purification plants & reservoirs
  • Precast manhole sections
  • Manhole covers & grade rings
  • Sewer systems
  • Box culverts
  • Underground structures
  • Underground parking structures
  • Tunnel and metro works
  • Reservoirs
  • Swimming Pools
  • Sheet pile interlocks



What you can expect from
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