Timber, coated composite and previously painted surfaces do not always take the same preparation. Send product information where available. A coating choice should follow compatibility checks rather than assuming any household paint can be applied over the existing finish.
Rubbing, loose hinges and latch problems should be identified before painting. Extra paint can make tight clearances worse. Suitable hardware repairs can be requested separately, but a new finish is not a substitute for correcting an underlying door movement issue.
An internal door may need to remain open between coating stages. Tell Fix Nik whether it serves a bathroom, bedroom or another frequently used room. Practical access arrangements matter when the room cannot simply be taken out of use.
The agreed service covers small internal-door painting jobs, compatible surface preparation and agreed finish. Exclusions: Fire/smoke door certification or modifications, exterior coating systems, hazardous paint stripping, door replacement.