Granite composite sinks — including Silgranit, Fragranite, Cristadur and grey granite finishes — are among the most durable kitchen sinks available, but they’re not immune to chips, cracks and surface damage. This guide explains how professional granite sink repair works and when it’s the right solution.
What Is a Granite Composite Sink?
Granite composite sinks are made from a mixture of granite stone dust and acrylic resin, typically around 80% granite and 20% resin. Major brands include Blanco Silgranit, Franke Fragranite, Villeroy & Boch Ceramicplus (stone versions), and Schock Cristadur. The result is an extremely hard surface that resists heat, scratches and staining — but chips from dropped pans or heavy impacts are still possible.
Common Types of Granite Sink Damage
- Edge chips — the rim or lip of the sink chips from dropped items
- Bowl cracks — hairline cracks from thermal shock or impact
- Surface pitting — small surface chips or divots in the bowl
- Colour fading or bleaching — from harsh chemical cleaners
- Drain area wear — concentrated surface erosion around the plughole
Can Granite Composite Sinks Be Repaired?
Yes — in most cases, chips and surface damage to granite composite sinks can be repaired professionally. The repair process involves filling and blending the damaged area using specialist compounds that match the granite composite’s texture and colour. Because these sinks are solid-coloured and typically matte or satin finish, colour matching is achievable to a very high standard.
The Repair Process
- The damaged area is cleaned and prepared
- A specialist repair compound is matched to the sink’s colour — grey, black, white, cream or anthracite
- The compound is applied and built up in layers to fill the chip or crack
- The repair is sanded and blended to match the surrounding texture
- A final finish coat is applied to seal the repair
Grey Granite Sinks: Colour Matching
Grey granite composite is one of the most popular sink colours and also one of the most challenging to match due to the subtle tone variations in different shades of grey. Our technicians carry an extensive range of grey tones and use professional colour-matching techniques to achieve a near-invisible repair on grey Silgranit, grey Fragranite and grey Cristadur sinks.
Repair vs Replacement
A new granite composite sink typically costs £200–£700, plus fitting costs of £100–£300 and the cost of new plumbing connections. Professional repair costs a fraction of that for a chip and is completed in a single on-site visit with no disruption to plumbing.
Get a Free Granite Sink Repair Quote
Send photographs of the damaged sink — including a close-up of the chip or crack and a wider shot showing the sink colour — and we’ll provide a free, no-obligation repair estimate.
