Half of finish 'warranty claims' are cleaning damage or hinge drift. A one-page handover converts those calls into silence.
The card contents
Approved cleaning (soap, microfibre, two-cloth), the blacklist (abrasives, solvent sprays, polishes), steam-zone habits, and the batch colour code for future touch-ups. Laminate it; magnetise it inside the sink door.
First-month expectations
One hinge-settling adjustment visit or a taught DIY (three screws), cure-hardness note — gentle first two weeks — and where the touch-up kit lives. Clients told in advance do not call in alarm.
Damage triage lines
Chip: pen kit. Scratch on gloss: polish or local respray. Sheen patch on matte: local respray, stop the product that caused it. Edge lift: does not happen on lacquer — that line alone sells the finish.