What You’ll Need

• CROP 2K Fiberglass Putty – 750 ml + Hardener – for filling and strengthening damaged areas.
• Protective Sheet Film for Resin Projects, 4x4m Surface Cover – to shield your workspace from drips and spills.
• “Shiny Shield” – Glossy Release Film for Resin Projects – for lining moulds or achieving a high-gloss, easy-release resin finish.
• Sandpaper (various grits)
• Mixing tools
• Protective equipment (gloves, eyewear, mask)
• Cleaning materials (cloth, suitable solvent)

Workspace safety and sheet cutting

Clean, protected workspaces and precise sheet cutting make all the difference in bodywork repairs. Keep all surfaces covered with leak-proof sheets and trim sheets neatly before use.

Step 1: Prepare and Protect the Work Area

Begin by selecting a clean, well-ventilated workspace. Remove any loose paint, dirt, or rust from the area to be repaired using sandpaper or a wire brush. This helps the resin and sheets bond more effectively and ensures a smooth finish. Next, cover surrounding surfaces with a protective film to prevent accidental resin spills or dust contamination.

Protective Sheet Film for Resin Projects, 4x4m Surface Cover is ideal for safeguarding your workspace, offering an easy-to-apply, leak-proof barrier.

Step 2: Measure, Cut, and Dry-Fit the Resin Sheet

Lay out the resin sheet or film to match the area you wish to reinforce. Use scissors or a craft knife to cut the sheet to size, ensuring overlap beyond the damaged region for a secure fit. Dry-fit the sheet to verify coverage and make adjustments as needed before applying any adhesives or resins.

At this stage, if you require a high-gloss finish or need to line a mould, consider using the “Shiny Shield” – Glossy Release Film for Resin Projects, which provides a perfectly smooth and easily removable surface.

Step 3: Mix and Apply Resin or Putty Safely

Mix your resin or fibreglass-reinforced putty according to the manufacturer’s instructions. Adhere to recommended ratios and mixing times to achieve the right consistency and full strength. Apply a generous layer to the prepared surface, pressing the resin sheet firmly in place and smoothing out any bubbles or wrinkles.

For deeper cracks or holes, use CROP 2K Fiberglass Putty – 750 ml + Hardener as your filling material. This ensures optimum strength and durability, especially for vehicle bodywork or heavy-duty repairs.

Step 4: Cure, Finish, and Inspect

Allow the resin or putty to cure fully based on the product’s guidelines. During curing, keep the area clean and avoid disturbing the repair. Once the resin is completely set, sand the surface to remove any unevenness or sharp edges. Inspect your work closely—if required, apply a second layer or additional finishing for a seamless result before priming and painting.

Removal of release films (if used) will reveal a smooth, glossy surface, minimising the need for further finishing work.

Tips, Pitfalls, and Troubleshooting

Always wear gloves and protective eyewear to avoid irritation from resin and dust. Allow proper curing time for each product used—rushing the process can lead to weak repairs or a tacky finish. Avoid over-application of resin or putty, as it can create lumps or slow curing. Keep surfaces dust-free, and check that each sheet is fully embedded in the resin for optimal bonding. If bubbles form, gently roll or squeegee them out before the resin sets. Should you encounter peel or poor adhesion, check for surface contamination or incorrect mixing ratios.

Finishing for a lasting repair

Smooth sanding and thorough inspection after curing ensure your repair blends seamlessly. For projects needing a gloss finish, a release film is ideal for effortless demoulding and optimised results.