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Foundation Pit Sealing

Sealing of foundation pits

Foundation pit sealing: sealing of sheet pile walls, slotted walls, slurry trench walls and other pit walls with WEBAC products

Foundation pit structures must be adequately sealed to protect the pit walls or slurry trench walls from water penetration. WEBAC products for foundation pit sealing are ideal for sealing water-bearing cracks and joints in sheet pile walls, slotted walls, slurry trench walls and other pit walls in foundation pits. 

Post-construction waterproofing of leaking foundation pits is possible thanks to the targeted injection of WEBAC PU injection foam resins. Leaks in foundation pits are quickly and reliably sealed also in case of highly pressing water by injecting these foam resins. A secondary injection of WEBAC PU injection resins is then carried out to obtain a permanent sealing effect.

WEBAC products for foundation pit sealing

WEBAC solutions for sealing pit walls are suitable for various application ranges:  

  • Sealing of sheet pile walls
  • Sealing of slotted walls
  • Sealing of bored pile walls
  • Sealing of slurry trench walls

Our products:

PU Injection Foam Resins
PU injection foam resins (PU foam) are also called quick-reaction foams. They are designed for the fast and temporary stopping of water penetration and are characterized by their strong increase in volume. They can also be used to stop highly pressing water.

PU Injection Resins
Polyurethane resins stand out due to their high flexibility and good adhesion at the same time. Cracks injected with PU injection resins remain leak proof also in case of crack width modifications and if exposed to dynamic stress. PU injection resins are used for installing post-construction damp proof courses in masonry against capillary rising moisture.

PU Combi Injection Resins
PU hybrid products are characterized by their fast foam formation after water contact and their permanent sealing effect.

Injection Gels
Acrylate gels are injection materials characterized by their very low viscosity and are the ideal solution for sealing structural elements with ground contact (gel injection). 

Injection Pumps and Accessories
WEBAC offers an extensive range of injection accessories. 1C and 2C injection pumps with different delivery rates provide the matching injection technology for each application.

Injection Packers
Injection packers are filler necks which connect the structural element to the injection pump during the injection process. Depending on the type of connection to the construction element one distinguishes between drill-hole packers and surface packers.