VFI®-5055 75 D Concrete Patch Repair

VFI®-5055 75 D Concrete Patch Repair

VFI-5055 75 D Concrete Patch Repair is a fast-setting, low-viscosity polyurethane repair material for filling non-moving cracks, patching spalled areas, and resurfacing broken concrete. It’s a very versatile product that can be bulk mixed and applied in freezing temperatures for year-round repairs. When combined with aggregate, it provides a tough, durable patch for any porous concrete surface. VFI-5055’s strength and high rigidity result in a material that fully penetrates cracks and damages to become a permanent repair.

VFI-5055 75 D Concrete Patch Repair from VFI is a low-viscosity urethane material for year-round repairs on cracked and damaged concrete surfaces.

Features & Benefits

  • Patching compound repairs cracks, chips, spalling, etc.
  • Fast-setting for a return to service in 10 minutes
  • Permanent repair with excellent strength and durability
  • Versatile application in exceedingly cold temperatures
  • Ultra-low viscosity to fill extremely fine cracks
  • Can be mixed with sand or aggregate for larger repairs

Instructions for Use:

Surface Preparation

The repair area should be clean and free of oils, dirt, films, and other contaminants that could affect adhesion. Hairline cracks must be saw-cut. Open up the crack to a minimum of ¼” wide by ¼” deep using a dry diamond blade. Remove all dust by vacuum or compressed air from the cut-out area. All areas receiving VFI-5055 should be dry before application. Concrete must be aged at least 28 days before the patch repair is used. If the area needing repair is damp or wet, it must be primed and allowed to set for 10-60 minutes, depending on temperature.


Before combining the A (Iso) and B (Poly) materials, premix the B side. Measure the B side before pouring it into the measured A side material and mix together until uniform. Transfer the material into a clean mixing container and mix once more before use. The product must be thoroughly mixed and used before the end of the pot life. Mix times may vary depending on the volume of material used and the mixing method. When in use, the temperature should be between 50°F – 100°F with the material at a minimum of 65°F. Higher temperatures and larger quantities will shorten the pot life.

Mix VFI-5055 with dry industrial quartz sand or a similar filler when repairing larger areas or resurfacing broken concrete. The filler should be free of moisture and have an average grit size between 30 and 60. Coverage will vary based on the size of the aggregate used. Treat cracks and spalled areas with the patch material, then fill with sand. For deep repairs, build up in layers until it is level with the concrete. Finish the repair by running a trowel across the material until smooth. Do not overwork the material, or it may cause the repair to look rough. The repair will be traffic ready in 10 minutes at room temperature.


Application equipment, tools, and surfaces can be cleaned with xylene or MEK before the material cures. If the material has cured, use a grinder to remove it.


*Always read the safety data sheet before working with chemicals

Use chemicals only as directed and for their intended purpose. Do not dispose of chemicals down the drain. Most chemicals must be disposed of as hazardous waste.

PPE to avoid all unnecessary exposure:

  • Hand protection – wear chemically resistant protective gloves (nitrile, butyl, neoprene)
  • Eye protection – wear chemically resistant safety glasses or goggles when handling the material
  • Body and skin protection – wear suitable protective clothing that covers all exposed skin
  • Respiratory protection – in case of insufficient ventilation, wear suitable respiratory equipment. Respirator selection must be based on known or anticipated exposure levels, the hazards of the product, and the safe working limits of the selected respirator

Product Limitations

VFI-5055 is not a joint filling material and is not intended for use where substrate movement is required. It is not UV color stable and has no long-term UV testing. The material contains isocyanate, which can irritate the skin and is toxic if inhaled as particulate matter. Avoid prolonged breathing of vapors or repeated skin contact. Keep the material away from moisture to prevent it from bubbling or foaming. Wet or damp areas must be primed and allowed to set before repair.

  • Incompatible materials – strong oxidizers
  • Conditions to avoid – heat and incompatible materials
  • Chemical stability – stable under normal storage conditions
  • Reactivity & hazardous reactions – no dangerous reactions known under normal use
  • Hazardous decomposition products – may include, and are not limited to, oxides of carbon

Potential Health Hazards

  • May cause respiratory tract irritation. A side material may also cause allergy and asthma symptoms or breathing difficulties if inhaled.
  • Causes skin irritation or sensitization: redness, edema, drying, defatting, and cracking of the skin.
  • Causes serious eye irritation: discomfort, pain, excess blinking and tear production, marked redness, and swelling of the conjunctiva.
  • May cause stomach distress, nausea, or vomiting if swallowed.

*If you are experiencing any of these symptoms, seek medical advice or attention. Call a poison control center or doctor if swallowed.

Application Methods:

  • Inject Inject
  • Pour Pour

Available Packaging:

  • Tote
  • Drum
  • 5 Gallon
  • Cartridge