De Neef® Waterproofing Injection Solutions

Leaks stop here: Fast, proven, durable.

Fastest, most durable and effective leak sealing solution

The De Neef® portfolio provides waterproofing injection solutions that stop leaks under any circumstances and in any application - foundations, infrastructure and more. Nobody plans for a leak, so when one occurs it usually represents a cost overrun and a setback for a construction project. The ability to quickly and permanently stop a leak in any part of a construction is therefore invaluable for contractors and owners.

0 dilution
Closed cell hydrophobic
Easy to use
Single component
40+
Years' experience
Overview

Seal leaks almost as fast as they appear

The major advantages of De Neef® products include the fact that they are easy to use, are not diluted, and can be applied quickly and reliably. The portfolio is mostly based on single-component, closed cell, hydrophobic polyurethanes, which are both durable and lasting. Therefore, leaks that are stopped once will remain stopped. For taking care of leaks that slow down the progress of a job site, endanger the future of a construction, or prevent full use of a building, De Neef® has become the world's most trusted brand.

Solutions for every leak

De Neef® has a variety of formulations for a number of different applications:

  • For owners who need to repair and maintain buildings and infrastructure projects
  • For contractors who need to shore up deep foundations during excavation
  • For installers and applicators who are charged with specialized leak repair

In every case, there's a De Neef® solution that's best-suited for the task at hand—including deep foundations, underground spaces, tunnels, mass rapid transport infrastructure and sewer repair applications.

Solutions for every structure

Concrete or masonry—no matter which type of construction, De Neef® can fix the leak. From the ground breaking through completion, De Neef® products can be used for soil injections and water control and remediation. De Neef® solutions can also be used during excavation or tunnel boring. De Neef® products can be used in every stage of underground construction.

Certified around the globe

We has done extensive testing of De Neef® products to ensure that performance claims are backed up in the field. De Neef® products have multiple certification levels including CE certification for use in the European Union, and has potable water certifications from around the world.

Supported globally, available locally

No two leaks are exactly the same—the only thing that any two leaks have in common is that they have to be fixed as fast as possible. The De Neef® portfolio offers solutions for all possible challenges in leak sealing and soil injections. With local availability, there's no waiting for the product to arrive—De Neef® is readily available.

With a global sales and technical support staff, contractors can trust that De Neef® solutions will perform. Don't wait for leaks to slow you down—contact GCP today to learn how to use De Neef® on your project.

Leaks Stop Here. Fast. Proven. Durable.

Product Warranty

Click on the login to access the site with your username and password. Please add GCPAT\ (including the slash) in front of your user name when entering user name. If you need assistance, please contact Denise White at: 617 498-4555 or Denise.I.White@gcpat.com

Product Listing
  • Product
  • Description
  • Key Benefits
  • Applications Type
De Neef® AC-400®
Description

AC-400 Chemical Grout is an acrylamide free acrylate monomer system sealant designed, for water control during tunneling operations, for curtain grouting, and for excavatable soil consolidation in situations where low tensile and compressive strengths can be tolerated. AC-400 can also be used for controlling infiltration in mainline and lateral sewer joints.

Key Benefits
  • Acrylamide free
  • Pumps without modification to existing grouting equipment
  • Extremely low viscosity grout (1-3 cPs)
Application Type
  • Water control in tunneling
  • Curtain grouting
  • Soil support for excavation
  • Mainline and lateral sewer grouting
De Neef® Aqua-Tite
Description

Aqua-Tite is a fast reacting two-component polyurethane foam formulated to expand up to 6 times its original volume. 

Key Benefits
  • Fast reaction time
  • Simple mix ratio 1:1
  • Reacts underwater
Application Type
  • Stop large water flows
  • Fill rock fissures
  • Filling of underground storage tanks
De Neef® CFL PURe
Description

CFL PURe is a hydrophobic polyurethane designed for void filling and barrier wall grouting.

Key Benefits
  • Free Foam Expansion up to 20 times
  • Contains no volatile solvents
  • Single Component
Application Type
  • Sealing spaces with differential movement
  • Filling voids
  • Barrier Wall Grouting
De Neef® Cut Cat Fast and Extra Fast PURe
Description

Cut Cat Fast and Extra Fast PURe are designed to be mixed with Cut PURe to allow for faster reaction times in applications involving the cut-off of gushing water with a high to very high pressure and speed.

Key Benefits
  • Faster reaction times for Cut PURe.
  • Enhanced cold weather reactivity.
  • Phthalate free, unregulated for transport and storage.
Application Type
  • Sealing larger volume leaks thru concrete cracks and fissures
  • Cold weather grouting
De Neef® Cut PURe
Description

Cut PURe is a hydrophobic polyurethane designed to fill large voids in rock fissures, gravel layers, joints, and cracks in concrete structures and for the cut-off of gushing water. 

Key Benefits
  • Contains no volatile solvents
  • Single component
  • Will not dilute in water
Application Type
  • Sealing larger volume leaks 
  • Filling voids
  • Stabilizing soil or gravel
De Neef® Denefoam 200
Description

Denefoam 200 is HCFC Blown spray foam sealant that can be used to seal and fill voids.

Key Benefits
  • Easy to install
  • Packaged in kits
  • Low-density material
Application Type
  • Fill underground void spaces
  • Seal void spaces in concretes
  • Fill wall cavities
  • Fill abandoned utilities and conduits
De Neef® Denepox I-40
Description

Denepox I-40 is an ultra low viscosity, 100% solids, two component, moisture insensitive epoxy injection resin system designed specifically for gravity feeding or pressure injection of cracks.

Key Benefits
  • Ultra low viscosity
  • Moisture insensitive
  • 100% solids
Application Type
  • Hairline structural cracks
  • Gravity feed horizontal cracks
  • Porous concrete surfaces
De Neef® Denepox Rapid Gel
Description

Denepox Rapid Gel is a non-sagging, rapid curing, 100% solids, two component, fast setting epoxy gel used for patching, surface sealing, and bonding substrates. 

Key Benefits
  • Fast setting
  • Low odor – no mercaptans
  • Moisture insensitive
Application Type
  • Surface patching
  • Surface sealing
  • Bonding substrates
De Neef® DeneSeal-P-2235
Description

DeneSeal-P-2235 is a high performance; NSF approved chemical resistant elastomeric joint sealant. 

Key Benefits
  • May be used total water submersion applications
  • Certified to NSF Standard 61, Sec. 6
  • Retains elasticity even under harsh conditions
Application Type
  • Floor joints
  • Concrete panels
  • Harsh chemical environments
De Neef® Flex LV PURe
Description

Flex LV PURe is a hydrophobic polyurethane designed to form a flexible gasket when injected into cracks and joints in concrete structures. 

Key Benefits
  • Single component
  • Controlled reaction time
  • Improved low temperature performance
Application Type
  • Sealing leaking cracks in concrete 0.02” and wider
  • Sealing moving and non-moving joints in concrete
De Neef® Flex SLV PURe
Description

Flex SLV PURe is an ultra low viscosity hydrophobic polyurethane designed to be injected into hairline cracks in concrete structures. 

Key Benefits
  • Super low viscosity for hairline cracks
  • Free foam expansion up to 18 times
  • Contains no volatile solvents
Application Type
  • Sealing fine and hairline leaking cracks in concrete 0.02” and finer
  • Injecting grout tubes (INJECTO®)
De Neef® Flotation Foam
Description

DeNeef Flotation Foam is a two component rigid polyurethane system designed for pour foam application requiring constant flow characteristics and even density distribution.

Key Benefits
  • 1:1 mix ratio
  • Resistant to most hydrocarbons
  • Meets Coast Guard requirements for 33 CFR 183.14
Application Type
  • Moldings
  • Flotation devices
  • Refrigeration panels
De Neef® Gelacryl
Description

Gelacryl is an acrylate polymer for injection into concrete structures and soils. Its low viscosity makes it ideal for injection into pores, capillaries, hairline cracks, and honeycombed concrete.

Key Benefits
  • Extremely low viscosity 
  • Excellent penetration into soils
  • Non corrosive and non toxic
Application Type
  • Hairline & spider cracks in concrete
  • Re-injection of failed polyurethane grout
  • Honeycombed concrete
De Neef® Gelacryl SR
Description

Gelacryl SR Chemical Grout is an acrylamide free acrylate monomer system designed to stop infiltration in mainline and lateral sewer joints. 

Key Benefits
  • Extremely low viscosity grout (1-3 cps)
  • Very low permeability (5x10-9 cm/sec)
  • Provided in liquid form (40% solids)
Application Type
  • Mainline and lateral sewer grouting
  • Water control in tunneling
  • Curtain grouting
De Neef® Gelacryl Superflex
Description

Gelacryl Superflex is unique blend of methacrylic acrylate copolymers that combines the low viscosity of traditional acrylate resins with the elongation and adhesion typically associated with polyurethane resins.

Key Benefits
  • Resistant to most acids and alkalis
  • Excellent thermal resistance 40ºF - 160ºF
  • Reaction time can be controlled
Application Type
  • Hairline & spider cracks in concrete
  • Re-injection of failed polyurethane grout
  • Expansion & moving joints
De Neef® Gelacryl Superflex AR
Description

Gelacryl Superflex AR is a system composed of Superflex methacrylic acrylate copolymer resin and DeNeef Reinforcing Agent. 

Key Benefits
  • Low viscosity 
  • Reduced shrinkage
  • Non corrosive and non toxic
Application Type
  • Honeycombed concrete
  • Curtain grouting
  • Potable water applications
De Neef® HA Multigel NF
Description

HA Multigel NF is a hydrophilic polyurethane designed to react with water and form a water impermeable gel mass.

Key Benefits
  • Non-flammable
  • Contains no volatile solvents
  • High penetration rate through soils
Application Type
  • Stabilization of soil
  • Potable water tanks and storage
  • Curtain wall grouting below grade structures
De Neef® INJECTO® PURe
Description

INJECTO® PURe is an ultra low viscosity hydrophobic polyurethane designed to be used with INJECTO® Grout Tube for sealing construction joints. INJECTO® PURe grout expands on contact with water and quickly cures to a tough, flexible foam that is resistant to most organic solvents, mild acids, alkali, petroleum and micro-organisms.

Key Benefits
  • Free Foam Expansion up to 20 times
  • Contains no volatile solvents
  • Single Component
  • Will not dilute in water
  • Controlled reaction time
  • Tough foam with flexibility
Application Type
  • Repairing existing leaky joints
  • Waterstop for new concrete structures
  • Flexible waterstop in concrete joints
De Neef® MC 300
Description

MC 300® ULTRAFINE Cement is a blast furnace slag based cement composed of ultrafine particles, designed for injection into loose soils, rock, concrete, and down-hole applications. 

Key Benefits
  • High cured strength
  • Excellent durability
  • Low permeability
Application Type
  • Geotechnical grouting
  • Oil well remedial cementing
  • Seal off underground streams
De Neef® MC 500
Description

MC-500® MICROFINE® Cement is a blast furnace slag based cement composed of ultrafine particles, designed for injection into loose soils, rock, concrete, and down-hole applications.

Key Benefits
  • High cured strength
  • Excellent durability
  • Low permeability
Application Type
  • Geotechnical grouting
  • Oil well remedial cementing
  • Seal off underground streams
De Neef® MC 800
Description

MC800 FINE Cement is a blast furnace slag based cement composed of ultrafine particles, designed for injection into loose soils, rock, concrete, and down-hole applications.

Key Benefits
  • High cured strength
  • Excellent durability
  • Low permeability
Application Type
  • Geotechnical grouting
  • Oil well remedial cementing
  • Seal off underground streams
De Neef® Pipe Plug Kit
Description

Pipe Plug Kit is a unique product for sealing electrical conduits and other irregular annular spaces.

Key Benefits
  • Free foam expansion 15 times initial volume
  • No volatile solvents
  • NSF/ANSI 61 Potable water approved
Application Type
  • Electrical conduits
  • Filling irregular spaces
De Neef® Reinforcement Foam
Description

Reinforcement foam is a thermally reticulated polyester sheet product used in joints or voids to stabilize and reinforce polyurethane and acrylate chemical grouts.

Key Benefits
  • Very high permebility
  • Easy to cut to size on site
  • Simple to install
Application Type
  • Chemical grouts in joints
  • Chemical grout in voids
De Neef® Reinforcing Agent
Description

Reinforcing Agent is a VOC compliant latex emulsion designed to reinforce polyurethane and acrylic resins. 

Key Benefits
  • Improved tensile and bond strengths
  • Very adhesive
  • Contains no volatile solvents
Application Type
  • Reinforcing agent for Sealfoam PURe.
  • Modifier for Gelacryl and Superflex acrylate resins
De Neef® Rock-Tite B3
Description

Rock-Tite B-3 is a two component high density polyurethane foam.

Key Benefits
  • 15-20 lb/ cu.ft foam density
  • Stable pours at elevated temperatures
  • Very high compressive strength
Application Type
  • Fill rock fissures
  • Voids
  • Soil stabilization
De Neef® Sealfoam PURe
Description

Sealfoam PURe is a single component, low viscosity, hydrophilic MDI based polyurethane resin.

Key Benefits
  • Free foam expansion up to 5 times
  • High bond and tensile strength
  • Withstands thermal movement
Application Type
  • Sealing dry moving non-structural cracks when used at a 1:1 ratio with water.
  • Sealing wet moving non-structural cracks vwhen used neat.
De Neef® Soil PURe
Description

Soil PURe is a hydrophobic polyurethane that, when used alone or with Soil Cat PURe, is designed to increase the bearing capacity of permeable soil.

Key Benefits
  • Free foam expansion up to 3 times
  • Contains no volatile solvents
  • Very high strength with no creep 
Application Type
  • Stabilizing soil beneath slabs and roadways
  • Confinement of hazardous materials in soil
  • Creating below grade cut-off curtain wall
De Neef® Swellseal® 2010
Description

Swellseal® 2010 is an extruded, vulcanized hydrophilic expansive rubber strip for the sealing of concrete construction joints, pipe penetrations, joints in underground pre-cast elements.

Key Benefits
  • Proven track record in concrete structures subject to high water pressure
  • Reversible swelling properties
  • Non-sag when correctly placed around pipes and in vertical joints
Application Type
  • Sealing cold and construction joints
  • Sealing pipe penetrations
  • Sealing joints between precast elements
De Neef® Washing Agent
Description

DeNeef Washing Agent is a non-flammable solvent mixture for cleaning polyurethane grout pumps and equipment.

Key Benefits
  • Non-flammable
  • Anhydrous
Application Type
  • Flushing out and cleaning pumps and lines used to inject polyurethane grouts.
Swellseal® Mastic
Description

Swellseal® Mastic is a one-component, polyurethane-based, solvent free, hydroswelling mastic, supplied in cartridges and aluminium sausages, for the sealing of construction joints and around pipe penetrations.

Key Benefits
  • Flexible system
  • Easy application with standard caulking gun.
  • Durable
Application Type
  • Sealing rough and smooth construction joints of in-situ cast concrete.
  • Sealing joints between pre-cast segments 
  • Sealing around steel H-beams
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