Composite sinks — made from a blend of granite or quartz stone dust and acrylic or polyester resin — are among the most popular kitchen sink choices in the UK. Brands like Blanco, Franke, Astini and Schock dominate the market. When these sinks chip or scratch, professional repair can restore them to near-new condition. Here’s what you need to know.
Why Composite Sinks Chip
Despite their tough appearance, composite sinks can chip if a heavy item — a cast iron pan, a glass bottle, heavy cutlery — is dropped into them. Edge chips around the waste hole, the overflow or the rim are most common. Scratches can also appear from repeated abrasion.
Popular Composite Sink Colours and Repair
- Black and anthracite composite sinks — most common in UK kitchens; slightly more challenging to match than light colours
- White and cream composite — relatively straightforward colour match but requires attention to any yellowing
- Grey and charcoal composite — requires careful pigment blending
- Champagne and coffee tones — achievable with the right compound mix
Can You DIY a Composite Sink Repair?
DIY composite sink repair kits are available but typically produce mediocre results — the colour match is imprecise and the surface texture rarely matches the original. Professional repair using specialist compounds and polishing equipment consistently produces superior results, particularly on dark sinks where any mismatch is obvious.
Blanco, Franke and Astini — What’s the Difference for Repair?
The repair approach is similar across all composite sink brands. The key variable is the specific colour and surface finish — slightly grainy, matte, or slightly reflective. We assess this during the visit and adjust our technique accordingly.
