What You’ll Need

• “Mixer Nozzle” – For Mixing Epoxy Glue, 50ml, Araldite 2000 Series Compatible – A plastic nozzle designed for precise mixing and injection of epoxy glues.
• “Resinstone” – One-Component Methacrylic Resin for Concrete Floors and Driveways – A deep-penetrating resin ideal for sealing absorbent concrete surfaces.
• “Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm – A clear epoxy resin suitable for visible or detailed joint applications.
• Cartridge gun or injection pump (compatible with your chosen cartridge and nozzle)
• Protective gloves and eye protection
• Wire brush, vacuum or compressed air
• Masking tape (to define resin boundaries, if required)

Essential Tools and Resin Selection

Choose high-quality resin and mixing equipment that matches your joint size and project requirements. The right nozzle and resin type simplify application, ensuring optimal results and long-term durability.

Step 1: Prepare the Joint and Surrounding Surface

Begin by ensuring that the joint area and surrounding concrete are dry, clean, and free of dust, debris, or previous sealant residue. Use a wire brush to loosen dirt and a vacuum or compressed air to completely clear the cavity. For stubborn dirt, a mild detergent and rinse may be used, but the joint must be thoroughly dry before the next stage. Good preparation ensures maximum adhesion and penetration of the resin, reducing risk of failure later.

Step 2: Set Up Injection Points and Contain the Area

If you are working on deep or wide joints, drill small holes along the joint to insert injection packers or tubing at regular intervals. Use masking tape on the exposed surface edges to prevent excess resin from spreading beyond the repair zone. For through-joints where resin could leak, seal the underside or sides as needed to contain the material. Plan the injection sequence so resin travels from the lowest to the highest point, displacing air as it fills voids.

Step 3: Mix and Inject the Resin

Prepare your chosen resin according to product instructions. For smaller repairs or fine control, a cartridge system with a dedicated mixing nozzle such as the “Mixer Nozzle” – For Mixing Epoxy Glue, 50ml, Araldite 2000 Series Compatible ensures thorough on-the-spot mixing and accurate delivery. Attach the cartridge to a suitable gun, fit the mixing nozzle securely, and slowly depress the trigger to push resin into the joint or injection packer. Observe resin flow closely and adjust pressure to avoid blowing out the joint or leaving voids. Continue injecting until resin is seen at the following port or until the joint is filled.

Step 4: Allow the Resin to Cure and Finish the Surface

After injection, leave the resin undisturbed for the manufacturer’s recommended curing time, avoiding disturbance or loading on the area. For methacrylic resins like “Resinstone” – One-Component Methacrylic Resin for Concrete Floors and Driveways, this could be under 12 hours. Once fully cured, remove masking tape and injection packers. If needed, finish the surface by light sanding or patching with concrete repair mortar. For visible or decorative joints, a clear epoxy such as “Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm may be used for a neat, clear finish.

Tips, Common Mistakes, and Troubleshooting

• Proper surface preparation prevents poor adhesion – Do not skip cleaning, as surface dust and moisture are leading causes of failure.
• Work during optimal temperatures for best results – Extreme cold or heat alters resin flow and curing rates.
• Always wear protective equipment and ventilate the work area when using resins indoors.
• Control resin flow to avoid air pockets – Inject slowly and monitor for leaks or air lock that may require reapplication.
• Dispose of used mixing nozzles and clean all tools thoroughly before the resin cures.

Application Demonstrations and Troubleshooting Visuals

See practical examples of resin injection techniques, surface containment, and finished joints to help visualise key steps and avoid common mistakes.