VFI®-5075 50 A Polyurea Joint Filler

VFI-5075 50 A Polyurea Joint Filler is a softer, two-component, self-leveling polyurea material designed to seal joints and pads in industrial applications with light traffic. At a lower hardness, it is less susceptible to splitting and separation, which can occur when joints in floors are filled before the concrete shrinks. With strong elastomeric properties, the joint filler stays sealed during movement from expansion and contraction. A longer cure time allows for easier trimming and cutting of overfill material to achieve a flush appearance with the concrete. VFI-5075 is machine dispensed to fill cracks, damaged joints, or new construction joints on horizontal concrete surfaces.

VFI-5075 50 A Polyurea Joint Filler from VFI is a polyurea material for sealing light traffic industrial floor joints to prevent concrete damage.

Features & Benefits

  • Allows concrete to expand and contract without cracking or breaking
  • Strong enough to protect concrete edges from spalling under light loads
  • Improved adhesion properties and excellent elongation
  • 1:1 mix ratio by volume for easy application
  • Prevents water, dirt, and other contaminants from causing deterioration

Instructions for Use:

Surface Preparation

Joint filler separation may occur if applied too soon after the concrete has been poured and hasn’t had time to shrink and cure. New concrete slabs should be allowed to cure for at least 28 days before joint filler application. Remove all debris, oils, loose particles, and other contaminants that may break the bond of the joint filler. Clean concrete and joints where necessary by grinding, sandblasting, or wire brushing. For the best results, re-cut the joints with a dry diamond blade. Joints should be vacuumed after being sawed.

All surfaces should be structurally sound. Clean out previously filled joints and remove old sealing material. Priming may be required if the old material is not saw-cut from the joint.


The temperature should be between 50°F – 100°F during application, and the material temperature should be at least 65°F. Higher temperatures will shorten the material’s pot life. Make sure to thoroughly mix the B side (Poly) before application. Mix times may vary depending on volume and mixing method.

Use a low-pressure, plural component machine pump. A .375 x 13” static mixer is recommended for the best results. The coverage rate will depend on the depth and width of the joints. Before filling the joint, install closed-cell backer rods at a depth of 1-1 ¼”, avoiding 3-sided adhesion. When using a backer rod, the joint filler will cover approximately 138 linear feet per gallon for ¼” wide by ½” deep control joints. If a backer rod is not used, fill the joints to full depth. The material should be level with the concrete and slightly overfilled (about 5%). VFI-5075 will need approximately 20 minutes to set. Use a sharp 8” wall scraper or razor to shave excess material from the slab for a flush appearance. A smooth and chatter-free cut can be achieved using lightweight oil on the blade. Allow the joint filler to cure for at least 7 hours before opening it up to light foot traffic and 24 hours for heavy foot traffic.


The recommended cleanup solvent for VFI-5075 is xylene or MEK. Wipe excess material from concrete and tools before it cures. If it does cure, use a sharp wall scraper 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 properly-fitted dust- or splash-proof chemical safety goggles/glasses and a face shield if a splash hazard exists
  • Body and skin protection – wear suitable protective clothing that covers up 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

The A side material contains isocyanate, which may irritate the skin and is toxic if inhaled as particulate matter. Avoid prolonged breathing of vapors and repeated skin contact. It is not intended for exterior or interior joints subject to extreme movement beyond 25%. Do not apply to slopes greater than 3%, as this product was designed for horizontal application. As an aromatic polyurea, it is not UV color stable, and discoloration of the material may occur when exposed to UV light.

  • Incompatible materials – A side: water, alcohols, amines, bases, and acids. B side: strong oxidizers and acids
  • Conditions to avoid – heat and incompatible materials
  • Chemical stability – stable under normal storage conditions
  • Reactivity & hazardous reactions – no dangerous reaction known under normal conditions
  • Hazardous decomposition products – A side: carbon monoxide, carbon dioxide, nitrogen oxides, hydrocarbons, and HCN. B side: may include, and are not limited to, oxides of carbon and oxides of nitrogen

Potential Health Hazards

  • May cause respiratory tract irritation. A side material may cause allergy and asthma symptoms or breathing difficulties if inhaled. B side material may cause burns.
  • Causes skin irritation or sensitization: redness, edema, drying, defatting, and cracking of the skin. The B side is toxic in contact with the skin and will cause severe skin burns, redness, pain, and blisters. Repeated exposure to the material can result in absorption through the skin, causing a significant health hazard.
  • Causes serious eye irritation: discomfort, pain, excess blinking and tear production, marked redness, and swelling of the conjunctiva. B side material may cause burns.
  • May cause stomach distress, nausea, or vomiting if swallowed. B side material is toxic if swallowed and may cause burns.

*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

Available Packaging:

  • Tote
  • Drum
  • 5 Gallon
  • Cartridge