FLEXFOAM 1K

Advanced Single-Component Polyurethane Resin for Reliable Crack Sealing and Waterproofing

Why FLEXFOAM 1K is Your Top Choice?
FLEXFOAM 1K is a premium-quality, single-component polyurethane resin designed to effectively seal leaking cracks caused by structural stress or damage in concrete and masonry. Thanks to its excellent adhesion and low viscosity, FLEXFOAM 1K penetrates deeply into the finest fissures and hard-to-reach areas, creating a durable and flexible foam seal that bonds firmly with the concrete substrate. Its outstanding mechanical properties ensure long-lasting protection against water ingress, even in dynamic or moving cracks.

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Key Benefits and Usage Guidelines

• Superior Crack Penetration: The low-viscosity resin flows into micro-cracks and voids, expanding upon contact with moisture to form a semi-rigid, flexible polyurethane foam with closed cells, providing excellent waterproofing without shrinking or swelling.

• Adjustable Reaction Time: FLEXFOAM 1K is mixed with a specially formulated catalyst (6–10% by weight), allowing precise control over curing speed to suit various job requirements.

• Robust Adhesion and Mechanical Strength: It bonds tightly to concrete and masonry surfaces, restoring structural integrity and resistance to pressure and movement.

• Hydrophobic and Solvent-Free: The resin repels water and is environmentally safer compared to solvent-based alternatives.

• Easy Handling and Storage: Store FLEXFOAM 1K in sealed containers at temperatures between 10°C and 30°C to maintain product quality. Avoid prolonged exposure to moisture or temperature extremes.

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Recommended Applications

• Sealing active or static micro-cracks in concrete and masonry exposed to water pressure

• Waterproofing joints between tunnel segments and diaphragm walls

• Filling voids, gravel nests, and other structural defects vulnerable to leakage

• Curtain injection to prevent water ingress behind underground structures

• Repairing cracks and leaks under constant hydrostatic pressure

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Technical Highlights

• Form: Single-component, hydrophobic, solvent-free polyurethane resin

• Viscosity: Extremely low (~55 mPa·s), enabling deep penetration

• Curing: Semi-rigid foam formation triggered by moisture contact

• Expansion: Approximately 20 times volume expansion during curing

• Packaging: Available in 20 kg canisters; catalyst supplied in 1 kg or 2 kg packs

• Storage Conditions: Temperature between 10–30°C; moisture protected

• Health & Safety: Use with adequate ventilation and protective equipment as fumes may cause irritation
  
   

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Why Choose FLEXFOAM 1K?

• Provides fast, effective sealing of dynamic leaks even under high water pressure

• Flexible foam adapts to structural movements without cracking or detaching

• Highly durable and resistant to environmental conditions common in infrastructure projects

• Backed by extensive experience and quality standards from Cover Technologies

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If you are looking for a reliable, professional-grade injection resin to ensure lasting waterproofing and structural protection, FLEXFOAM 1K is your ideal solution. Contact us today to learn how FLEXFOAM 1K can enhance your concrete repair projects and safeguard your structures against water damage.