We had a Francke sink installed about 20 months ago as part of a job including fitting granite worktops.
Noticed some slight cracking outwards from the waste a couple of months back. Installer said Francke called this leaching. They supplied a new one which installers fitted recently.
New sink now has hairline crack from lower far right corner to top of that corner. Installer is referring back to Francke.
We have a dishwasher and nothing heavy goes in the sink.
Anyone had any similar problems? Sink is mounted under worktop.