How do I repair vertical or joint areas in a resin sink?

Choosing the Right Product for Vertical Repairs

The best solution for fixing vertical surfaces, joints, and corners in a resin sink is a thixotropic epoxy mastic. Unlike standard resin, thixotropic formulations resist sagging, staying reliably in place even on steep surface angles. “Magelstick” Epoxy Mastic offers strong mechanical bonding and is specifically designed for vertical applications. Its minimal shrinkage and excellent gap-filling properties ensure a seamless, durable finish that holds up over time.

Step-by-Step Application Technique

• Surface Preparation: Begin by thoroughly cleaning and drying the area to ensure strong adhesion. Remove any loose debris or previous repair material.
• Mixing: Prepare the epoxy mastic in small batches according to the manufacturer’s instructions—this prevents premature curing and allows for precise use.
• Application: Using a putty knife or similar spreader, gently press the mastic into the joint or corner, smoothing it flush with the surrounding surfaces. Its thixotropic nature means it remains in place, even on vertical sections.
• Finishing: Allow the repair to fully cure as recommended. If required, sand gently after curing to achieve a smooth surface.

When This Matters: Vertical Surface & Joint Repairs

Choosing the appropriate repair approach is especially important when addressing leaks around joints, restoring edges in chipped corners, or making repairs on sink walls. Traditional resins may run or drip, but a specialised epoxy mastic provides both the workability and reliability needed for these tricky spots.