What You’ll Need

• Resin Fibreglass Repair Kit – Complete Polyester Resin and Hardener Set – for repairing cracks or chips
• “Epoxy Polish” – Epoxy Resin Polishing System – for smoothing and restoring shine
• Medium and fine sandpaper (typically 400 to 1200 grit)
• Clean, lint-free cloths
• Nitrile gloves and eye protection
• Sponge, mild detergent, and clean water

Key Materials and Safe Preparation

Choose quality resin repair kits and polishes formulated for bathrooms. Use gloves and prepare a clean, dust-free workspace to avoid contamination. Organise all your supplies before starting, including sandpaper, mixing pots, and safety materials.

Step 1: Clean and Prepare the Shower Tray

Begin by removing all soaps, limescale, and surface contaminants. Use a mild detergent and a non-abrasive sponge to thoroughly wipe the whole tray, paying attention to stubborn stains. Rinse several times with warm water and pat the surface dry with a lint-free cloth. Thorough cleaning prevents adhesion issues in later steps.

Check for any wax residues, oils, or sealant traces—remove these with a gentle solvent if necessary. This ensures your repairs and finishes bond securely.

Step 2: Repair Cracks and Chips

For visible cracks, dents, or holes, gently sand the area with medium grit sandpaper to roughen the surface and feather out edges. Wipe clean with a damp cloth and let dry thoroughly.

Next, use the Resin Fibreglass Repair Kit – Complete Polyester Resin and Hardener Set to fill the damaged zones. Following the kit instructions, mix the provided resin and hardener in the correct ratio, apply using the included brush, and reinforce with the fibreglass mat if structural support is needed. Smooth out air bubbles and allow to set undisturbed. Let all layers fully cure before moving on.

Step 3: Sand the Surface Evenly

Once repairs are fully hardened, sand the repaired and adjacent areas gently with finer grit sandpaper (from 400 up to 1200 grit). Use circular motions without applying excess force. The goal is to blend the repair seamlessly into the original tray surface and remove any raised edges or roughness. Avoid excess sanding pressure, which can create dips or thin spots in the resin.

Wipe away all dust with a damp, lint-free cloth. Ensure the surface is completely clean and dry before the next step.

Step 4: Restore Gloss with Polishing System

To return the tray to its original shine, apply a resin-friendly polishing system such as the “Epoxy Polish” – Epoxy Resin Polishing System. Dispense a small amount on a clean pad or cloth, and polish in overlapping circles across the surface. For best results, use a polishing sponge or suitable pad rather than ordinary cloths. Buff until glossy and free of haze.

If the shine looks uneven, repeat with fresh polish and a clean pad. Always follow the manufacturer’s directions for the chosen product and safety guidance.

Tips, Mistakes, and Troubleshooting

• Never pour thick layers of resin—thinner coats cure more reliably with less risk of overheating or cloudiness.
• Test compatibility on a small area before treating the whole tray—especially if the tray has been previously coated or painted.
• If faint scratches remain after polishing, go over with a finer abrasive, then re-polish.
• Work in a well-ventilated space and use all personal protective equipment provided in your kits.
• Careful surface prep ensures success—don’t rush the cleaning and sanding.

Expert Advice for Lasting Results

Curing time is crucial—never rush. Allow each resin or polish layer to fully set before subjecting to water or foot traffic. For enduring shine, consider applying an extra polish layer every few years.