Grooves and moulded corners can retain loose paint or dirt that affects adhesion. The profile should be visible in the enquiry photos. Preparation must stay within suitable non-hazardous methods and does not imply stripping unknown old coatings.
Painting to a natural break may provide a clearer finish boundary than touching up several scattered spots. Whether that is useful depends on condition and matching expectations. Any extension of the paint area should be agreed before work begins.
Low trim is easily knocked by cleaning equipment and furniture. Allow the product-specific drying and curing stages before normal contact. Exact readiness depends on the coating and conditions, so no universal same-day cleaning promise should be assumed.
The agreed service covers small interior trim preparation and recoating after substrate suitability review. Exclusions: Structural timber repair, hazardous coating removal, external window restoration, large renovation repaint.